Named Range Returns Wrong Range

OK, I have a huge SS with lots of named ranges. Many of which are dynamically assigned lists.

All of the existing ones work fine, but when try to add a new named range, it returns the cells from a previously named range. (Always the same old one.)

example:

A range (one of many) is named "Shift_List" and is defined using
=OFFSET(info!$C$3, 0, 0, COUNTA(info!$C$3:$C$2000),1)

New range is created named "PN_List" and is defines using
=OFFSET(info!AA$3, 0, 0, COUNTA(info!AA$3:AA$2000),1)

When I create a Data Validation List or otherwise use "Shift_List" as the source it works fine.

However if I do the same thing and refer to "PN_List", it returns the items from "Shift_List"

Any new named range returns the Shift_List cells, although older ones still work correctly.