State of WI state return was filed electronically with federal, Dept. of Revenue for WI sent a letter to client  showing the owe taxes vs. getting a refund as stated in the software. They made changes to the amount of taxes (gross taxes), but in re-reviewing the return there was more income showing to be reported in WI then there actually should be. I am assuming there will need to be an amended done to correct this, just not sure how to get income allocation corrected, since I was having trouble in the beginning for some reason allocating. The issued seemed to be corrected on the federal side, but wonder why more income was reported on state of WI return for wages earned while a resident of that state. Any suggestions on help on how to amend and correct this issue would greatly be appreciated. Also since federal return is still be processed will I need to wait until it is fully approved before doing the amendment for this client?

Thanks in advance for any help~