Advice needed - merging a "travel" catalog back into the main catalog with updated photo flag/rank

[sbhasker]

I recently exported a couple folders from a lightroom catalog (a small portion of the catalog) to a new catalog to take while traveling. I wanted to review the photos and flag and rank them. I've returned now and not sure how I can merge the temp "travel" catalog back into the original catalog. No edits were made to the files, just flagging and ranking, but I would like to modify the main catalog with that information. 
Can I just import from that catalog and the flagging and ranking will be updated? No duplicate files created?

Thank you for assistance!

[dj_paige · Accepted solution]

Scroll down to "Import Photos from a different Lightroom Classic Catalog" and see the options next to item 5. 

https://helpx.adobe.com/lightroom-classic/help/import-photos-various-sources.html

[sbhasker]

THANK YOU SO SO SO MUCH!!!! THIS WORKED PERFECTLY!!!!!!!