Just ran into another issue. Dragging and Dropping DWF files from explorer into a single new dwf inside ADR causes the Technic Font to turn to some other font that doesn't support the characters set in Technic.
I get Squares for each character.
If I load the original dwf files one at a time the technic font shows up perfectly.
Still hoping someone can shed some light on appending DWF files into one master file from inventor VBA.