I'm a fellow user (not a tax expert) and don't know specifically what Form 1116 data from prior years you are referring to, but if you are referring to your Foreign Tax Credit Carryover amounts for the last few years (both regular and AMT), when you go through the Foreign Taxes Credit interview, it will ask some preliminary questions about your foreign taxes, including if you want to use FTC carryover amounts from prior years, then a screen will ask if you want to take a deduction or a credit. When you say you want a credit, it starts preparing Form 1116 in the background. The next screen or so asks for your FTC credit amounts from the last (up to)10 years (or fewer, if applicable) and has a table to enter them. It should be followed by another screen with a similar-looking table asking for the AMT amounts for the (up to) past 10 years (or fewer). In addition to the interview mode, if you're using desktop software, the 2 tables can also be accessed and direct entries made in Forms Mode by selecting 1116 Comp Wks in the left column list of forms.
Aside from FTC Carryover amounts, I'm not sure if you have other 1116 data from prior years you need to enter or not. In any case, I'm not an expert in Form 1116, but the above is what I know about entering the past few years of FTC Carryover amounts. If you have other specific data you need to enter from prior years on Form 1116, you'll need to ask a specific question, and hopefully, someone familiar with the foreign tax credit section can further comment.
