I've recreated the drawing border block we use in draftsight but not all the attributes appear in the "Advanced Attribute Edit" window. The attribute appears in the Block attribute manager though. The attribute is called PROJ_# 

I have tried using the sync and "Updateblockattributes" options multiple times with no luck.

I re-created the attribute and called it "PROJ_NUM" and now it appears

Is draftsight not able to handle special characters in attributes?