I had a friend newer to SW ask me this the other day and I wasn't sure if there is a shortcut way of doing this...

They designed and dimensioned the part they were modeling using MMGS, thinking all the units were in IPS. They wanted to convert over to IPS, but keep the numerical value of all the units the same. When I went Tools > Doc Properties > Units, I changed the document to IPS. Then I went to scale, and scaled the entire doc using the mm to in unit conversion, which worked to around 3 sig figs.

Is there a way to simply change all these units but not numerical values or not?

Thanks for the help!