Reply To: Working with a bigger margin on inner pages questions

I have a catalog with a header on each page that needs to be edited. I have a text frame on each of the master sides, 1″ from the the spine. The page margins are below that for the catalog content.
I release and type in the header frame, making sure not to move the frame itself. But when a page gets moved, the frame doesn’t move along. It makes sense because the frame on the facing page is a different text frame, so now I have one unreleased text frame, along with the text frame with type in it, positioned 1″ from the outer edge.
Any suggestions how I can have a text frame that will position itself correctly, depending on whether it’s a left or right page?