Like I said above - call the IRS on the number that should be on the CP2000 notice. Do not amend unless the IRS says to - it might not be necessary - and if they do want you to amend then they will tell you where to mail it to.
(Just amending takes 4 months to process and will not satisfy the CP2000 letter time limits.)
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
