If you are replying to my original question, it was resolved with TurboTax2019. This version was able to access my previous 2018 file to include for example, personal data and carryover information for the 2019 tax year. That was my original concern when I was no longer able to open 2018 taxes using TT2018 after updating my OS with Mojave. I couldn't even find the file on my computer.
There were 2 issues - one, the file wasn't where I thought it was - found it, but (issue 2) - it won't open with TT2018 even though it is a 2018 file. The solution I believe is to uninstall and reinstall TurboTax2018. As I had already filed 2018, I don't need to open it with 2018. But I needed to open it for 2019 (which I was able to do).
However, for TT2018 users who still need to access previously completed tax returns using 2018 and are having issues - try deleting and reinstalling 2018 - that may solve the issue. TT2019 is not a problem - it will open up your file to access 2018 data.
