When setting the diameter and schedule for a pipe style, both settings change for the pipe, but only the diameter changes for the elbows (fittings).
There is no indication in the Style Editor that you have changed only the elbow diameter and not the elbow schedule. Below is an example of changing a copied pipe style from Schd 40 to 80.
New users often discover the incorrect elbow schedule only after reviewing the BOM or selecting a hidden edge display mode.
Extra steps in the Style Editor are required to set a matching elbow schedule.
This schedule mismatch has been "broken" for several releases.
Please vote for this idea if you think changing the style schedule value should change the pipe and the elbows.
Regards,
Jerry