Question: Open a maplet from the Maplet Builder and get 'discard content?'

I am using the Maplet Builder. I created the first example in the Advanced examples. I forgot to set the 'pause' to 'value'='true'. I had to leave Maple. I came back later expecting that I could open the maplet in the Builder and continue, but the Builder responds 'discard current content? yes no'. If I say yes, I get a blank maplet pallet; if I say no I get nothing. So I opened the text of the maplet and added 'value'='true' and then ran the maplet. It ran fine. But when I tried to open the maplet in the Builder, it said that an exception had ocurred. What am I to do?
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