diff --git a/notes.md b/notes.md
index ca36f3fd..b593d25d 100644
--- a/notes.md
+++ b/notes.md
@@ -5,6 +5,7 @@
 * cap path ends
 * help dialog
 * full bug reports
+* .b64 export may not capture or restore tools properly
 * onshape mouse mapping option
 
 ## 2.4
diff --git a/src/geo/polygon.js b/src/geo/polygon.js
index 95a9d5c9..436d900d 100644
--- a/src/geo/polygon.js
+++ b/src/geo/polygon.js
@@ -1007,7 +1007,7 @@
                 exit = false;
                 return true;
             }
-        });
+        }, this.open);
 
         return exit;
     };
diff --git a/src/mode/cam/prepare.js b/src/mode/cam/prepare.js
index 48abe384..a22aa4e7 100644
--- a/src/mode/cam/prepare.js
+++ b/src/mode/cam/prepare.js
@@ -481,16 +481,16 @@
                     return conf.length === 0;
                 });
             }
-            const thru = []; // match thru polys
+            // const thru = []; // match thru polys
             level = level.filter(lp => {
                 if (lp.level_emit) {
                     return false;
                 }
-//                 if (bottm && !clr) {
-//                     const tm = bottm.filter(bp => lp.isEquivalent(bp));
-//                     thru.appendAll(tm);
-//                     return tm.length === 0;
-//                 }
+                // if (bottm && !clr) {
+                //     const tm = bottm.filter(bp => lp.isEquivalent(bp));
+                //     thru.appendAll(tm);
+                //     return tm.length === 0;
+                // }
                 return true;
             });
             // omit polys that match bottom level polys unless level above is cleared