Text touch-up in LiveCycle document



I'm undoubtedly missing something simple and it's costing me time.

Here's the situation:

1) Document created in Excel.

2) Converted to PDF with Distiller.

3) Fields added in LiveCycle designer.

4) Reader rights added in Acrobat.

Now we discover that a phone number is wrong, and it appears that I must return to step 1 because I can't find a way to make minor text changes in Acrobat or LiveCycle once I have completed documents with rights enabled.

What, please, am I missing?