Importing Contacts from CRM into Campaigns for Segmentation

I am just starting to use Monday Campaigns and wanting to add my CRM contacts as marketing contacts. The only columns that automatically imports is the contact name and email but I also want other columns so that I can segment my contacts into groups for email campaigns. The only way I have found to do this is to use mirror columns and link it to the CRM board but then I have to manually link each contact in Campaigns to the one in the CRM to populate the mirror columns…that is over 3,000 contacts to manually go through!

There has to be an easier way!