ITunes wiped all but iTunes purchased music from my iPad mini and my iPod nano instead of transferring the cd uploads into iTunes. Is there any way of recovering my music. Very disappointed!

Question

Initially things worked fine. I was very pleased. I had my music library in itunes, on my Ipod nano, and a thumbdrive to back up most of my music.
When I tried to sync the music from itunes onto my new ipad mini last week it deleted the albums in itunes leaving me with only purchased itunes items in the account, On the new Ipad mini CD's from my collection could not be played but they were in fact listed. My new mac will not read the music files I backed up onto a thumb drive or show the uploaded CD music collection. Additionally when I logged into itunes with out any devices connected from my PC the itunes account was completely up to date with my CD's and purchase items in Itunes. As soon as I tried to sync it with my Ipad mini that virtual access to the collection was wiped out leaving only purchased items.
By trying to upload CD music from my Ipod nano into Itunes (originally uploaded into itunes from CD's and  synced to the ipod nano in the first place, taking more than a weeks time), I am prompted to reset the entire ipod nano to factory settings (it gives no other option).  I was following the instructions emailed to me from the applecare team. This was my only recourse for recovery of the lost music files, the only device left that had my album collection aside from the owned CD's. Now the ipod nano is being wiped clean and left with only the itunes purchased music ( same thing that happened with the itunes account and now the Ipad). When I disconnect the ipod nano to see if there are any albums still left on the device, it gives me an error that it was improperly disconnected.
I just wanted to add the music from itunes to my new mac and the new ipad mini. Instead I have lost all of my uploaded CD's and now have only purchased items in itunes, the new ipad mini, the new mac, and the ipod nano.  I have to  re-upload my entire music library into itunes/icloud from CD's again and hopefully be able to then sync it with my new devices.
However it may be better to buy the itunes purchased music on CD's from a store, Cut my losses while I can and never buy anything from apple or itunes again. Atleast I will not have my entire music collection wiped out for moving it between my own devices. Itunes match doesn't do **** either. I have wasted alot of hard earned cash on devices products and itunes purchases by converting to apple products and services.
What a big mistake.
Very dissapointed with the interface. Very Very Dissapointed!
[email protected]
[email protected]

Answer 1

Had the same issue when I changed computers.  I backed up my I-tunes files, including CDs, but I-Tunes will not recognize anything but Apple purchases now.  There were 300+ CDs in that original catalog.