ErnestoM:Because these fields are inside a repeating table, I believe that when you create the promoted property (for the Form Library column) you'll need to select an option that tells InfoPath and SharePoint how to handle for the repeating data that is being promoted into a column.
Could you have re-phrased it? "you'll need to select an option that tells" - what?
Probably you wanted to give a reference, and if not, I'd appreciate to see any