Community Tip - Did you get called away in the middle of writing a post? Don't worry you can find your unfinished post later in the Drafts section of your profile page. X
Currently Windchill Workgroup Manager doesn't support these drawing formats extensions .slddrt
User have to store the formats files in a shared folder to insert or modify a frame in a drawing.
These files would be managed by Windchill
https://support.ptc.com/appserver/cs/view/solution.jsp?n=CS64181
P.S. Don't forget to vote for your own idea.