InfoPath Dev

I'm building this form that is linked to an Access database and I want  the fields in the repeating table to be read only( I can do that), but I want a button that when clicked does that Control+Enter fshortcut and inserts a new row BELOW and copies the data from the row above( I know how to do this with the preceding-sibling::d:group[1]/@my:field1) function.) However, I don't want this new row to be read-only. I want the user to be able to make changes to the newly inserted and pre-populated field.

You may need to use more than one repeating table and some conditional formatting to show / hide rows. If your data source has an ID column that is auto populated, you might be able to base the conditional formatting off whether that field has a value. So, for example, your read only table would only show rows with an ID.... and your other table (not read only) would have rows without. You can use a bit of formatting to make them look like a single table -- for example, show a header for the first (read only) table and not for the second, make sure your columns are the same size, etc.