I suspect that you would do it this way.
1) Start the CO amended tax return process.
2) Then go to the Federal section...In the Wages&Income area, for either the 1099-INT or 1099-DIV (or both) that show tax exempt $$ on them....and break out the CO Bond $$ from "Multiple States" $$ into separate 1099-INT and 1099-DIV forms the way I indicated above.
You aren't really needing to amend the Federal section, since the total $$ reported there are exactly the same (If you do it right)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
