Deductions & credits

I am having the exact same issue. I was showing a refund of about $6K all the way through inputting my tax data - then when I went to do state, the federal taxes flipped to show about $7K owed. I had a heart attack and starting going line by line - and saw I now have no mortgage interest deduction on Sch A.  I went back to make sure I had input things correctly and checked the correct boxes - I did - and it's still not working. I am up to date on software - in fact, I installed recent updates right before this happened, so perhaps there's a bug in there. I sure hope I can get this fixed ASAP because I am all set to file for that refund!