HI @TomWafer4127,

DWG Trueview will not open a SheetSet. Or are you indicating that once the files have been saved down, that the sheetset no longer works?  Did you rename or relocate the files during your conversion?

Would you like to etransmit the set to me in the original 2018 format so I can see what might be going on?

If your data needs to be private or confidential, please email it directly to me at john.vellek@autodesk.com and please include a link to this thread in your email.

Please select the Accept as Solution button if my post solves your issue or answers your question.