Coordinate boms with balloons ?

Hello;

          I did an experiment to check this by grabbing 3 components and making an assy. I then made a drawing from the assy & added a bom. I then ballooned each item & they came out 2, 3, 1 or something like that for an order. I double clicked the first & changed the note of the balloon portion to 1 the 2nd to 2,  & the 3rd to 3. The setting for the balloons was still set to item no. Finally I resorted the boms & they followed the new balloon order.

     In an actually file I'm working on I can't just double click the note portion of the balloon & change the order as I get the note  this item cannot be changed because it's currently driven by component order. I want the balloons set to item no. because I want to flip the bom order to the new balloon sequence.

     Why could I do this in the experiment & not the file I working with? Is there a setting or something.

Thanks in advance for any input;

Rob_D SW 2017 sp5.

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