Mine Expert is old enough that it does not allow for more than one truck profile (just one each truck/bus/van/car).
I wasn't aware that the latest Expert model had that feature. I'm guessing you really have the Expert Plus (nice!) That model DOES have multiple profiles for a truck. Does your serial number start with B3 (6") or B4 (7")? If so, that's a "Plus" model. That feature came with a firmware upgrade in late 2023. If so...
If you have just created or modified a profile other than your current one, you must then actually select the alternate profile if that's what you want to use. Creating the new profile with the 14'2" creates it, but does not select it.