How can I use two account in iTunes Match of different countrys

I do have two ID accounts, USA and MEXICO, just the one in Mexico is activated with iTunes Match, last week I was in USA and i bought 1 cd, when i tryied to find my music (Mexicos ID) there was no music, I checked at the config and activated again de Mexico´s ID and the iTunes Match... the the CD was gone. I logged to my US ID again, purchased again the cd (it just download) and I sync to my computer and I said that I have to copy the CD manually (I don´t know how) and when i tried to activate my Mexico´s account it appearead a message that I have to wait 90 days. IT IS THE SAME IPHONE!!!! Why do I have to wait 90 days to get mi iTunes Match music in the device i got it?!?!?!?!?!?!