library part parameters do not form part of the .PLN settings and therefore cannot be saved with a PLN or TPL file.
you need to save favourites that can be loaded
[with
the PLN/TPL, or re-save the library parts with different default settings. the latter can only really be justified if you are creating your own, new library parts that are unique from the 'ArchiCAD Library' itself . . .
HTH
~/archiben
b e n f r o s t
b f [a t ] p l a n b a r c h i t e c t u r e [d o t] n z
archicad | sketchup! | coffeecup