OK. Figured it out. The problem is that double-clicking the 25300 line brings the user the wrong place in the Loss worksheet. While not a high priority Bug, it is at least a medium priority Enhancement request (the "Enhancement" being having the software go to the correct place when line 25300 is double-clicked). I am hoping Nazisa will communicate this to the design team.
BTW, the correct place to go (for I expect 99.9% of people) is line 7 - above the chart the software takes you to. There is a tricky bit here, in that if there is pre-1985 unapplied losses, the correct place to go is to "Step 1" that deals with lines 1, 2 and 3.
Tip - never try and get call center support afterhours. Nazisa was very good, but my experience afterhours were very bad.
