Convert DB from Passowords Plus to 1Password

I see now that there is a mrc-converter-suite package that covers Passwords Plus.

I think I can follow the command line instructions, although I don't understand what the ".." are for in this part of the Windows instuctions for immediately prior to conversion: "perl convert.pl -v enpass ..\pm_export.json". I was assuming the syntax would be "perl convert.pl -v passwordsplus [PWP CSV Export File Name]

But more fundamentally, is this worth doing where probably 35-50% of my 500 entries are "custom" in that the entries are going to be somewhat different from the PwP stock categories for the data.....it's not standardized? If these converted entries will be wrong when imported into 1Password, and then buried in the vault, perhaps the undesirable manual conversion of each entry is preferable in the long run. What is the judgment of the experts?