migrate original disk twice

I wanted to test out your software before I made the appropriate changes. I used a smaller SSD drive and migrated from my 750 GB hdd to the 256 SSD. Everything worked fine. I now want to migrate the original drive (750 GB) to a larger SSD: 480 GB. I have put the original drive back in the laptop, but now when I run the software it is telling me the following: "The software did not find any suitable target for the selected source".

When I look at the Partitions available, it looks like there are a lot of bogus partitions on the original HDD. Is this something I can fix? or do I need to migrate the 256 SSD to the larger 480 GB now?

Any help would be appreciated.

Thanks,

Charlie