Q: Multiple songs are listed as X removed that have not been removed. They are all songs that were loaded by cd. Why? How do I get them back?

I purchased new windows computer and began the data transfer process. i turned on Match to simplify song sharing. Upon doing so multiple songs are no longer available. They have the X in the cloud icon indicating I have removed them. I have not. They were all loaded over the YEARS from CD's. How do I get them back?