I have found a 3rd party tool to help me create a schematic symbol for an 800 pin FPGA (kipart). It’s output format for the library file is KiCad V5.0 (EEschema v2.3). I am looking for a way to convert this to the latest format (V9.0) so that I can add it to my library. Attempts to add it with the Library Manager and Import options are unsuccessful. I was under the impression that the Lib Manager woud recognize the older file format and update it. Maybe it does and this is a case of operator error. Any thoughts/suggestions would be appreciated
It should be possible to register the .lib file as legacy format. Please elaborate the steps you did.
Edit: This is the documentation on how to register the legacy .lib format library, after which you can migrate it to the current .kicad_sym format.
Retiredfeline, as soon as you mentioned “legacy format”, I realized what I wasn’t doing 
. I was able to get the kipart .lib file into my library and have seen the results in the schematic sheet.
Thanks for your reply and also a thanks to devbisme for his support.