ID:2297653
 
Resolved
The map editor will now avoid re-"numbering" map symbols, to avoid making too many changes that would impact a content revision system. It is recommended that you back up your map files before using this new version, just for added safety since the loading and saving behavior has not been touched in a long time prior to this.
Applies to:Dream Maker
Status: Resolved (512.1386)

This issue has been resolved.
The map editor likes to reassign different letter combos when altering the map, which makes content revision systems unhappy.
Lummox JR resolved issue with message:
The map editor will now avoid re-"numbering" map symbols, to avoid making too many changes that would impact a content revision system. It is recommended that you back up your map files before using this new version, just for added safety since the loading and saving behavior has not been touched in a long time prior to this.