I spent a couple of hours of joy going through this with support. After getting of the phone with them, going through a software reinstall and still having the issue I printed out the tax return. So I noted that there was a T2091 printing out with non-blank info. Went back into TT, cleared that form then the PRWS, then closed blank forms. Problem solved!
If you are referring to the “Principal Residence Designation Worksheet” (PRWS), there is a known issue with them appearing and not deleting. Our development team is looking into the problem, but they have not given a time frame on when it will be resolved.
If you are having problems with NETFILE, make sure that you clear the form (Select PRWS > Edit > Forms > Clear Current Form) and get the latest update, which you can download here: https://turbotax.community.intuit.ca/replies/2868252
If you are still unable to NETFILE even after the update, please contact our phone support as they will be better able to assist you (*Not available for TurboTax Free users*). https://turbotax.community.intuit.ca/replies/3152013