1 source file to 2 Indesign docs

Hi

We're trying to place content from one source file (plain text) into 2 different Indesign files (with 2 different paragraph styles).

Problem is the style from indesign file 1 is overriding the style on indesign file 2 and vice versa.

Is it possible to override paragraph/character styles and simply sync the content?

Thanks