So you have not used FBA to generate the dat file...
You had a folder with ALL the required Samples, and you have used dir2dat option in CLRMame Pro to make a list of what you have in the folder. Thank you very much for that, it was useful anyway
But in the next release of FBA, FBA might use more, or less, Samples, and again I will not know which ones.
And I can not use the dir2dat option in CLRMame to generate a complete dat file (as you have done) unless I have FIRST a complete set of samples in the folder... and I will not know if I have it or not.
So, if the file can not be generated by FBA itself, and if this info does not appear in the documentation, seems that the only way to know which Samples are needed is asking it in this forum every new release of FBA ?