Previously, the modified items were colored in red, and the user was required to fix them. Now they are modified automatically. Only empty items are denoted as invalid and colored in red.
Since the feature to deactivate mesh parts was added, this also required changing the behaviour of items when the mesh parts are deleted.
In PrePoMax, user selections are saved internally as user mouse actions. When the mesh is regenerated, these user actions are used to reselect the remeshed geometry. But when a mesh part was deleted, the user actions were changed to item IDs (it was not possible to determine which user actions are still valid and which are not). So after meshing, no reselection was possible. This is now changed. If a mesh part is deleted, only invalid user actions are removed from the user actions list, and selections remain user action-based. So reselection is possible.
Introducing this change could result in new issues/bugs.