RH2020 project save as missing

Hello,

I'm having a problem.

For every major release we make a new project.

I want to keep the 'old content', add some topics.

My first idea was make a new project from scratch, import topics, import the old toc (a click and drag from one project to the other works). But when doing that, I get an error and de topics referenced in the 'imported' link have broken links.

Ok, so to keep the links intact, I would like to open the old project, and 'save as' to a new project.

In the past I had to do that from within the file explorer, but in that case, some paths are to be verified.

Is there a way to to a save as that is 'transparent' to the user (no fiddling with paths )?

any other suggestion?

best regards

Olivier