What leads you to think that they are FMP 12 solutions? The fact that they have .FMP12 file extensions?
Both FileMaker 12 and 13 use the same file format and .fmp12 file extension just as FileMaker 7 though 11 all used the same file format with the .fp7 file extension.
Yes, it was because they all seem to have .FMP12 extensions. You answered my question, thank you.