diff --git a/designs/charlie/i18n/en.json b/designs/charlie/i18n/en.json
index 932f8ad20e1..5cd607cbba3 100644
--- a/designs/charlie/i18n/en.json
+++ b/designs/charlie/i18n/en.json
@@ -18,11 +18,11 @@
   },
   "s": {
     "cutBeltloops.t": "The belt loops are not shown",
-    "cutBeltloops.d": "The **Belt loops** are {{{ count }}} rectangular piece of fabric {{{ width }}} wide and {{{ length }}} long (there is no seam allowance). They are not shown because the **expand** core setting is currently disabled. Enable it to show this pattern part.",
+    "cutBeltloops.d": "The **Belt loops** are {{{ count }}} rectangular piece of fabric {{{ width }}} wide and {{{ length }}} long.",
     "cutBackPocketInterfacing.t": "The back pocket interfacing is not shown",
-    "cutBackPocketInterfacing.d": "The **Back pocket interfacing** is a rectangular piece of fusible interfacing {{{ width }}} wide and {{{ length }}} long (there is no seam allowance). The interfacing is not shown because the **expand** core setting is currently disabled. Enable it to show this pattern part.",
+    "cutBackPocketInterfacing.d": "The **Back pocket interfacing** is a rectangular piece of fusible interfacing {{{ width }}} wide and {{{ length }}} long.",
     "cutWaistband.t": "The waistband is not shown",
-    "cutWaistband.d": "The **Waistband** is a rectangular piece of fusible interfacing {{{ width }}} wide and {{{ length }}} long (there is no seam allowance). The interfacing is not shown because the **expand** core setting is currently disabled. Enable it to show this pattern part."
+    "cutWaistband.d": "The **Waistband** is a rectangular piece of fabric {{{ width }}} wide and {{{ length }}} long."
   },
   "o": {
     "backPocketHorizontalPlacement": {
diff --git a/designs/charlie/src/back-pocket-interfacing.mjs b/designs/charlie/src/back-pocket-interfacing.mjs
index aefc6cc8633..bab8e91d8e9 100644
--- a/designs/charlie/src/back-pocket-interfacing.mjs
+++ b/designs/charlie/src/back-pocket-interfacing.mjs
@@ -22,6 +22,7 @@ function draftCharlieBackPocketInterfacing({
     // Expand is off, do not draw the part but flag this to the user
     store.flag.note({
       msg: `charlie:cutBackPocketInterfacing`,
+      notes: ['flag:saUnused', 'flag:partHiddenByExpand'],
       replace: {
         width: units(w),
         length: units(h),
diff --git a/designs/charlie/src/beltloops.mjs b/designs/charlie/src/beltloops.mjs
index 67a5238d7e8..908220f1a7a 100644
--- a/designs/charlie/src/beltloops.mjs
+++ b/designs/charlie/src/beltloops.mjs
@@ -23,6 +23,7 @@ function draftCharlieBeltLoops({
     // Expand is off, do not draw the part but flag this to the user
     store.flag.note({
       msg: `charlie:cutBeltloops`,
+      notes: ['flag:saUnused', 'flag:partHiddenByExpand'],
       replace: {
         count: 7,
         width: units(width * 4),
diff --git a/designs/charlie/src/waistband.mjs b/designs/charlie/src/waistband.mjs
index 41ec76580b5..92b8b4d9d2b 100644
--- a/designs/charlie/src/waistband.mjs
+++ b/designs/charlie/src/waistband.mjs
@@ -28,15 +28,17 @@ function draftCharlieWaistband({
     store.flag.preset('expandIsOn')
   } else {
     // Expand is off, do not draw the part but flag this to the user
+    const extraSa = sa ? 2 * sa : 0
     store.flag.note({
       msg: `charlie:cutWaistband`,
+      notes: [sa ? 'flag:saIncluded' : 'flag:saExcluded', 'flag:partHiddenByExpand'],
       replace: {
-        width: units(absoluteOptions.waistbandWidth + 2 * sa),
+        width: units(2 * absoluteOptions.waistbandWidth + extraSa),
         length: units(
           2 * store.get('waistbandBack') +
             2 * store.get('waistbandFront') +
             store.get('waistbandFly') +
-            2 * sa
+            extraSa
         ),
       },
       suggest: {