@WriteOffWarrior , your understanding is generally correct in that form 1116 needs to have directly or otherwise collect the total foreign source income --- generally by country ( often the case for passive foreign incomes ). It should then be able to compute the applicable ratio of foreign source income to world income and use this to allocate US taxes for each foreign source income.
If you are comfortable working in the forms mode ( and for me the easiest way ) , just use the "1116 Comp Wks". This worksheet allows you to enter / edit amounts which then flow to the actual " form 1116 ( Copy 1)".
Use only the entry items and not the computed ones. You should be quite safe. However, just to be extra careful. I would suggest saving your return first ( save as with a different name ) , then open the original and work with that. If things go wrong , delete this working copy and use the saved version -- which has a different name but represents the original.
Good Luck.
Is there more I can do for you ?
