I completed the 1116 sch B on pdf, attached to tax return and labeled "other" "Form 1116 sch B"

I entered negative figures to zero out the carryforward on the proseries worksheet, which is just a worksheet and doesn't go to the IRS.

After I efile, I will go in and delete the negative entries.  When proseries adds sched B, it should autopopulate and carryforward correctly to 2022.  If Proseries can be counted on.