diff --git a/OpenNest/Forms/BomImportForm.cs b/OpenNest/Forms/BomImportForm.cs
index 673104d..b172622 100644
--- a/OpenNest/Forms/BomImportForm.cs
+++ b/OpenNest/Forms/BomImportForm.cs
@@ -18,7 +18,6 @@ namespace OpenNest.Forms
         private readonly BindingList<BomPartRow> _parts;
         private Dictionary<string, BomGroupPlateSettings> _groupSettings;
         private NestDefaults _defaults;
-        private ClampSettings _clamps;
 
         public Form MdiParentForm { get; set; }
 
@@ -31,7 +30,6 @@ namespace OpenNest.Forms
             dgvParts.DataSource = _parts;
             _groupSettings = new Dictionary<string, BomGroupPlateSettings>();
             _defaults = MainForm.LoadSavedNestDefaults(out _);
-            _clamps = MainForm.LoadSavedClampSettings(out _);
             ApplyDefaults();
         }
 
@@ -412,6 +410,8 @@ namespace OpenNest.Forms
             var jobName = txtJobName.Text.Trim();
             var nestsCreated = 0;
             var importErrors = new List<string>();
+            // Read when the nests are created, warning (once per session) like New does.
+            var clamps = MainForm.LoadClampSettings(this);
 
             foreach (var group in groups)
             {
@@ -437,7 +437,7 @@ namespace OpenNest.Forms
                     {
                         // As New does: saved defaults, then the machine clamps in those units.
                         _defaults.ApplyTo(nest);
-                        _clamps.ApplyToNewNest(nest);
+                        clamps.ApplyToNewNest(nest);
                     }
                 );
                 importErrors.AddRange(result.Errors);
diff --git a/OpenNest/Forms/ClampsForm.cs b/OpenNest/Forms/ClampsForm.cs
index 8143d76..ad3dbf8 100644
--- a/OpenNest/Forms/ClampsForm.cs
+++ b/OpenNest/Forms/ClampsForm.cs
@@ -63,9 +63,10 @@ public sealed class ClampsForm : Form
                 MaximumSize = new Size(450, 0),
                 Padding = new Padding(0, 0, 0, 8),
                 Text =
-                    "Fixed clamps along the plate edge through the origin. Parts and nesting keep "
-                    + "clear of each clamp by the plate's bottom edge spacing. Clamps that do not "
-                    + "reach a shorter plate are left off it.",
+                    "Fixed clamps along the plate edge through the origin. Auto Nest keeps parts "
+                    + "clear of each clamp by the plate's bottom edge spacing; clamps that do not "
+                    + "reach a shorter plate are left off it. Interactive fill and push, the "
+                    + "overlap check and cutoffs do not avoid clamps yet.",
             }
         );
 
diff --git a/OpenNest/Forms/MainForm.cs b/OpenNest/Forms/MainForm.cs
index b44101f..5111cb4 100644
--- a/OpenNest/Forms/MainForm.cs
+++ b/OpenNest/Forms/MainForm.cs
@@ -198,16 +198,16 @@ namespace OpenNest.Forms
             var nest = new Nest();
             LoadNestDefaults().ApplyTo(nest);
             // After the defaults so the rail is converted to the new nest's units.
-            LoadClampSettings().ApplyToNewNest(nest);
+            LoadClampSettings(this).ApplyToNewNest(nest);
             return nest;
         }
 
         /// <summary>
-        /// Loads the machine clamp settings (see <see cref="LoadSavedClampSettings"/>); an
+        /// Loads the machine clamp settings for creating new nests (New, BOM import); an
         /// unreadable or partly invalid file warns once per session, because the new nest's
         /// clamps may not match the machine.
         /// </summary>
-        private ClampSettings LoadClampSettings()
+        internal static ClampSettings LoadClampSettings(IWin32Window owner)
         {
             var settings = LoadSavedClampSettings(out var status);
 
@@ -222,6 +222,7 @@ namespace OpenNest.Forms
                         ? "could not be read, so new nests have no clamps"
                         : "has invalid values that were ignored, so new nests may be missing clamps";
                 MessageBox.Show(
+                    owner,
                     $"The clamp settings file {problem}:\n{ClampSettings.DefaultPath}\n\nCheck the clamps in Nest > Clamps and use Save as Machine Defaults to rewrite the file.",
                     "Clamps",
                     MessageBoxButtons.OK,
@@ -231,7 +232,7 @@ namespace OpenNest.Forms
             return settings;
         }
 
-        private bool clampSettingsWarned;
+        private static bool clampSettingsWarned;
 
         /// <summary>The single desktop entry point for the persisted machine clamp settings.</summary>
         internal static ClampSettings LoadSavedClampSettings(out ClampSettingsStatus status) =>