Thanks for the response Nancy.
But I checked every aspect and I believe now it is a bug (what else?). In changing the whole portion of the code into a procedure and skipping that procedures execution, I was able to regain step thru detail.
By the way, White Sands south from Albuquerque is a great place.
Cheers,
TF
'... and yes, I have taught the woodpecker about persistence. '