https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/118476/studs-keep-disappearing-from-composite-deck-designI have been working on a composite deck design for several months. The building has passed permit and is about to be issued for construction. So far, I have had no problems with it. All beam designs were locked so any changes to the design due to architecturalen-USTelligent Community 12https://communities.bentley.com/thread/365289?ContentTypeID=1Mon, 25 Apr 2016 22:56:21 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:98bbd40c-0dc9-4889-bc29-1ce9450ede7aSeth GuthrieFirst off you will want to restore the backup file, either one you have saved your self, or one that the program generates periodically. Just rename the .backup file to .rss. <br /> Changing a penetration should only affect beams in the vicinity of the opening. Did anything else happen like a change in version or a change in any of the design criteria, especially stud criteria?<br /> If the file is already affected this way I may not be able to tell what happened, but it does not hurt to send a copy of it to us using the instructions on the Secure File Upload link below.<div style="clear:both;"></div>