This change occurred why ?
- new post, editing etc....... what reason ?

If you had a post , then it is best to update the older post, as any mods would also migrate up
- new post = unproven output = bloody big headaches & heart attacks

the area you highlight can be affected by 2 areas
1- Misc Intergers #3 setting on how reference return is output
2- coding from the post ..... look for PRETRACT section on how the post outputs codes for preparing to toolchange


You need to work out what the actual line of code that is required to send Z to the home position
- for a Fanuc it can be G91 G28 Z0. . or a.... G53 Z0

( I haven't used Fadal, so correct me if wrong )
Don't use E0 as that is changing your work co-ord system, keep it in the same work origin
H axis is usually the incremental rotary axis around Z.... unless you have a rotary axis, it may be eliminated
could be a G28 missing, maybe the G90 should also be G91...... if it is G91, put G90 on the following line to keep it safe

Carefully prove the code off using MDI to show what code sequence does work, then, make the post output that code