One Incopy source for multiple layouts

For a extensive project I'm trying to come up with a smart workflow. There'll  be a short moment of time where I have to weave in the content with the design in an effcient way. One strategy I'm looking into now is starting with a very basic 'catalogue' layout I make in Indesign for the image/ text editors to fill in with Incopy. My plan was then to link that same content to the actual layout in a different Indesign document.

A first issue I bump into: when increasing the image in the real layout to e.g. a full page image, in the catalogue design that image also becomes large within it's image frame.

Question: is there a way to disconnect this layout information from the incopy file?

I reckon it's a handy feature, also if you'd like for instance to make both a horizontal and vertical layout based on same Incopy input.