Yes, This is one of the new quirks caused by the introduction of the Business Status feature GL-R.
 
I have the same issue when any transaction is modified in GL-P, whether the date, GL account or description, now GL-P retains the old unmodified transaction, the new modified transaction, and another offsetting transaction.
 
My way of dealing with this is to delete the old transaction, retain the modified transaction and delete the offsetting transaction.  Then I have only one transaction in the GL.

quote author=Laura Oliver   "I am sure there is a "fix" in the works."    
 
 
 
Thanks Lynn and programmers for fixing this in 9/25 update.  (WE just updated today)