diff --git a/test-linuxcnc-rs274-native.sh b/test-linuxcnc-rs274-native.sh
index cd84cc6..2f03eac 100755
--- a/test-linuxcnc-rs274-native.sh
+++ b/test-linuxcnc-rs274-native.sh
@@ -2970,29 +2970,35 @@ if not any(event["type"] == "program-end" and event["line"] == 5 for event in co
 l20 = load("cnc_sim_linuxcnc_coordinate_l20.json")
 if not any(
     event["type"] == "set-g5x-offset" and
-    event["line"] == 4 and
+    event["line"] == 5 and
     event["tool"] == 2 and
     event["start"]["x"] == 4 and
     event["start"]["y"] == 4 and
-    event["start"]["z"] == 4
+    event["start"]["z"] == 4 and
+    event["start"]["u"] == 4 and
+    event["start"]["v"] == 4 and
+    event["start"]["w"] == 4
     for event in l20
 ):
     raise SystemExit("missing G10 L20 P2 offset event after G55 selection")
-if not any(event["type"] == "program-end" and event["line"] == 5 for event in l20):
+if not any(event["type"] == "program-end" and event["line"] == 6 for event in l20):
     raise SystemExit("missing G10 L20 program end line number")
 
 p0 = load("cnc_sim_linuxcnc_coordinate_p0.json")
 if not any(
     event["type"] == "set-g5x-offset" and
-    event["line"] == 3 and
+    event["line"] == 4 and
     event["tool"] == 2 and
     event["start"]["x"] == 7 and
     event["start"]["y"] == 8 and
-    event["start"]["z"] == 9
+    event["start"]["z"] == 9 and
+    event["start"]["u"] == 10 and
+    event["start"]["v"] == 11 and
+    event["start"]["w"] == 12
     for event in p0
 ):
     raise SystemExit("missing G10 L2 P0 active G55 offset event")
-if not any(event["type"] == "program-end" and event["line"] == 4 for event in p0):
+if not any(event["type"] == "program-end" and event["line"] == 5 for event in p0):
     raise SystemExit("missing G10 P0 program end line number")
 
 select_all = load("cnc_sim_linuxcnc_coordinate_select_all.json")
@@ -3035,20 +3041,28 @@ if not any(event["type"] == "program-end" and event["line"] == 7 for event in g9
 
 g52_offset = load("cnc_sim_linuxcnc_g52_offset.json")
 g52_states = [
-    (event["line"], event["start"]["x"], event["start"]["y"], event["start"]["z"])
+    (
+        event["line"],
+        event["start"]["x"],
+        event["start"]["y"],
+        event["start"]["z"],
+        event["start"]["u"],
+        event["start"]["v"],
+        event["start"]["w"],
+    )
     for event in g52_offset
     if event["type"] == "set-g92-offset" and event["line"] > 0
 ]
 expected_g52_states = [
-    (2, 1, 2, 0),
-    (3, 1, 3, 0),
-    (4, 0, 0, 0),
-    (5, 1, 3, 0),
-    (6, 0, 0, 0),
+    (3, 1, 2, 0, 4, 5, 0),
+    (4, 1, 3, 0, 4, 6, 0),
+    (5, 0, 0, 0, 0, 0, 0),
+    (6, 1, 3, 0, 4, 6, 0),
+    (7, 0, 0, 0, 0, 0, 0),
 ]
 if g52_states != expected_g52_states:
     raise SystemExit(f"unexpected G52 shared offset sequence: {g52_states!r}")
-if not any(event["type"] == "program-end" and event["line"] == 7 for event in g52_offset):
+if not any(event["type"] == "program-end" and event["line"] == 8 for event in g52_offset):
     raise SystemExit("missing G52 offset program end line number")
 
 g52_xz_nurbs = load("cnc_sim_linuxcnc_g52_xz_nurbs.json")
diff --git a/test-linuxcnc-source-link.sh b/test-linuxcnc-source-link.sh
index 7888076..bd29869 100755
--- a/test-linuxcnc-source-link.sh
+++ b/test-linuxcnc-source-link.sh
@@ -3998,29 +3998,35 @@ if not any(event["type"] == "program-end" and event["line"] == 5 for event in co
 l20 = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_coordinate_l20.json").read_text())
 if not any(
     event["type"] == "set-g5x-offset" and
-    event["line"] == 4 and
+    event["line"] == 5 and
     event["tool"] == 2 and
     event["start"]["x"] == 4 and
     event["start"]["y"] == 4 and
-    event["start"]["z"] == 4
+    event["start"]["z"] == 4 and
+    event["start"]["u"] == 4 and
+    event["start"]["v"] == 4 and
+    event["start"]["w"] == 4
     for event in l20
 ):
     raise SystemExit("missing source-linked G10 L20 P2 offset event after G55 selection")
-if not any(event["type"] == "program-end" and event["line"] == 5 for event in l20):
+if not any(event["type"] == "program-end" and event["line"] == 6 for event in l20):
     raise SystemExit("missing source-linked G10 L20 program end line number")
 
 p0 = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_coordinate_p0.json").read_text())
 if not any(
     event["type"] == "set-g5x-offset" and
-    event["line"] == 3 and
+    event["line"] == 4 and
     event["tool"] == 2 and
     event["start"]["x"] == 7 and
     event["start"]["y"] == 8 and
-    event["start"]["z"] == 9
+    event["start"]["z"] == 9 and
+    event["start"]["u"] == 10 and
+    event["start"]["v"] == 11 and
+    event["start"]["w"] == 12
     for event in p0
 ):
     raise SystemExit("missing source-linked G10 L2 P0 active G55 offset event")
-if not any(event["type"] == "program-end" and event["line"] == 4 for event in p0):
+if not any(event["type"] == "program-end" and event["line"] == 5 for event in p0):
     raise SystemExit("missing source-linked G10 P0 program end line number")
 
 select_all = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_coordinate_select_all.json").read_text())
@@ -4063,20 +4069,28 @@ if not any(event["type"] == "program-end" and event["line"] == 7 for event in g9
 
 g52_offset = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_g52_offset.json").read_text())
 g52_states = [
-    (event["line"], event["start"]["x"], event["start"]["y"], event["start"]["z"])
+    (
+        event["line"],
+        event["start"]["x"],
+        event["start"]["y"],
+        event["start"]["z"],
+        event["start"]["u"],
+        event["start"]["v"],
+        event["start"]["w"],
+    )
     for event in g52_offset
     if event["type"] == "set-g92-offset" and event["line"] > 0
 ]
 expected_g52_states = [
-    (2, 1, 2, 0),
-    (3, 1, 3, 0),
-    (4, 0, 0, 0),
-    (5, 1, 3, 0),
-    (6, 0, 0, 0),
+    (3, 1, 2, 0, 4, 5, 0),
+    (4, 1, 3, 0, 4, 6, 0),
+    (5, 0, 0, 0, 0, 0, 0),
+    (6, 1, 3, 0, 4, 6, 0),
+    (7, 0, 0, 0, 0, 0, 0),
 ]
 if g52_states != expected_g52_states:
     raise SystemExit(f"unexpected source-linked G52 shared offset sequence: {g52_states!r}")
-if not any(event["type"] == "program-end" and event["line"] == 7 for event in g52_offset):
+if not any(event["type"] == "program-end" and event["line"] == 8 for event in g52_offset):
     raise SystemExit("missing source-linked G52 offset program end line number")
 
 g52_xz_nurbs = json.loads((OUTPUT_DIR / "cnc_sim_linuxcnc_source_g52_xz_nurbs.json").read_text())
diff --git a/tests/gcode/linuxcnc_coordinate_l20.ngc b/tests/gcode/linuxcnc_coordinate_l20.ngc
index a78f6c7..43ca656 100644
--- a/tests/gcode/linuxcnc_coordinate_l20.ngc
+++ b/tests/gcode/linuxcnc_coordinate_l20.ngc
@@ -1,5 +1,6 @@
 G21 G90 G17
-G0 X5 Y6 Z7
-G10 L20 P2 X1 Y2 Z3
+(Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_setup computes G10 L20 linear offsets for X/Y/Z/U/V/W from the current position.)
+G0 X5 Y6 Z7 U8 V9 W10
+G10 L20 P2 X1 Y2 Z3 U4 V5 W6
 G55
 M30
diff --git a/tests/gcode/linuxcnc_coordinate_p0.ngc b/tests/gcode/linuxcnc_coordinate_p0.ngc
index b9e6d9c..c0f86a5 100644
--- a/tests/gcode/linuxcnc_coordinate_p0.ngc
+++ b/tests/gcode/linuxcnc_coordinate_p0.ngc
@@ -1,4 +1,5 @@
 G21 G90 G17
+(Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_setup maps G10 P0 to the active coordinate system and stores U/V/W through PROGRAM_TO_USER_LEN.)
 G55
-G10 L2 P0 X7 Y8 Z9
+G10 L2 P0 X7 Y8 Z9 U10 V11 W12
 M30
diff --git a/tests/gcode/linuxcnc_g52_offset.ngc b/tests/gcode/linuxcnc_g52_offset.ngc
index 93ae126..c27fec8 100644
--- a/tests/gcode/linuxcnc_g52_offset.ngc
+++ b/tests/gcode/linuxcnc_g52_offset.ngc
@@ -1,6 +1,7 @@
 G21 G90 G17
-G52 X1 Y2
-G52 Y3
+(Source basis: LinuxCNC src/emc/rs274ngc/interp_convert.cc convert_axis_offsets treats G52 offsets as sticky per-axis values, including U/V/W, and G92.2/G92.3 suspend and restore #5211-#5219.)
+G52 X1 Y2 U4 V5
+G52 Y3 V6
 G92.2
 G92.3
 G92.1