This year all the foreign tax credit carryovers I had recorded in the past (automatically)disappeared from the software. Where should I look for those in my past forms?

It depends. Check you last year's return to see if you have a 1116 comp worksheet. Scroll to the bottom of the worksheet to and you should see a complete list of carryovers. If not, then you may need to look through each year's return. For your reference, I included a screenshot on what the worksheet looks like this year.

If these worksheets are unavailable, you can look at each Form 1116 and determine the amounts. 

• Look on line 14 for the amount of foreign taxes reported.
• Look on Line 35 for the amount of tax being utilized
• The carryover that is reported is the difference between these two amounts.

Meanwhile, here is the screenshot of the worksheet I mentioned to you in the first paragraph.