FileMaker Compatibility with prior versions of FileMaker Pro and FileMaker Server
FileMaker Pro and FileMaker Pro Advanced databases only work with other FileMaker software that supports the .fmp12 file format. Files from previous versions of FileMaker Pro must be converted to the new file format to be shared with FileMaker Pro 13 and FileMaker Pro Advanced. In addition, FileMaker Server and FileMaker Server Advanced will only host .fmp12 files. The .fmp12 FileMaker product family is not backward compatible with any other version of FileMaker software.
FileMaker Pro can directly convert your existing FileMaker Pro 12, 11, 10, 9, 8 and 7 databases. All other versions of FileMaker Pro will require a multiple product conversion. Review the information below to determine whether your files will directly convert to FileMaker Pro, or if they will need to be converted multiple times.