How do I stop a single LrC catalog from syncing?

[csgaraglino]

My master catalog has over 200,000 images dating back to film scans from 1990s.

I have since duplicated the catalog and removed all images older than five years old.

The new catalog has been cleaned up, and previews are working much faster. The new cat synced with mobile devices and Lr just fone - as expected.

But every time I want to open the old catalog and look for a past photo, it wants to sync with all the new photos. I do immediately hit PAUSE, but sometimes, it still tries to sync. I need this older archive catalog to permanently stop syncing when I open it.

Thoughts?

[JohanElzenga]

Open your catalog folder and delete the 'catalogname sync.lrdata' file for the catalog you do not want to sync.