[GNC] suddenly will not accept a normal transaction in a batch import.

[arthur brogard]

I have six transactions that gnucash will not import.  It red highlights and says 'do not import; no action selected'
hundreds of such transactions have been imported without any action selections at all.  I give, of course, date, amount,description, destination account.  All works fine.  Except for these six.

Any clues?  Thins I could/should do?