Walt, I assume you've doubled up the song and this happens at the end? Without seeing the sequence and the steps you took to reach this stage I can not say, I could list many possible reasons. Perhaps the first thing to try would be a measure delete from the end of last measure onwards to bring the end command back to the end of the sequence (dial up an extra couple of hundred measures to make sure). Perhaps the next might be to insert a step record control stop command at the end of the ending (if a start goes in first just delete it), it all depends on the particular sequence and how you got to this point

Bob, no-one has mentioned other control information that needs to be retained. If you now wish to completely change the criteria of the presented problem to include this new information it is perfectly obvious that all you have to do is erase the end command in the control track using step record, and then punch through the apc measure. This will easily satisfy your new conditions.