[MarioL]

You can define manual rules or maybe position the Hide rule above the static ones.

However, you must be careful with what you configure.

Automatic static NAT (created on the object), creates 2 rules:
node | any | any | nated | = | =
any | nated | any | = | node | =

This means that traffic goes out with the NAT IP and goes in with the real, usually private IP. (simplifying things a bit here)
If you want it to be seen somewhere as another IP, you must create specific rules.

If you state exactly what you want to achieve, it will be much easier to tell you what to do.