Okay, after @Carl recent message, I think I have this figured out...
Schedule D *does* show the prior depreciation... apparently when I entered the value in that Review Information screen, TT was satisfied and ran with it... Form 4562 also shows correct information...
So the basic source of my confusion was that I didn't think to look at the forms and see what they were calculating!!
So I think my issue has been resolved; I thank all of you for your assistance, and especially the last message from @Carl , which clarified many things for me!!
