Hmm I don’t think there is an existing way to do this (unless the files all happen to end in the same three letters or something). I’m not sure this is a thing that the FmDeveloperTool supports, I’ll play around with it and see if I can get it working.
Just did some testing of this and I have good news! This is achievable with OttoFMS as it exists now. The OttoDeploy UI doesn’t quite support it fully, but you can get it to work. If you use “.fmp12” as the replace text and “_new_ending.fmp12” as the With text, it will append to the filename. The issue in the OttoDeploy UI is simply that it doesn’t auto calculate the new filename inline, but it will work if you set the operation manually and deploy. The filenames will be correct in the screen to send the deployment. I’ll get the UI working properly in the next version
OttoDeploy 2.3.0 makes the UI work better with the .fmp12 replacement structure we discussed above. Let me know if you get a chance to test if it properly replaces references that don’t have the .fmp12.