Autoplant Piping V8I - Isogen symbol modification

I have created 130 +/- symbols (misc., instrument, etc.) to incorporate for our company to output with the Isogen piping isometrics.  This includes the asc file and respective bin file.  Interpreting the information provided, the Isogen program obtains it's information from a "symbols.ini" file.  How do I combine all these asc and/or bin files into a single asc and/or bin file?

Below I am showing a modified flanged flame arrestor.  The old symbol key was FT**.  I have input FTFL in the "new symbol key".  Is this the correct format for doing this?

Thanks,

Kelly Dean Miller
Sr. Piping Designer
WS Nelson Engineering