Kontact contents got screwed up

Hi there, with copying .kde/ back and forth to get the “checkboard” isue fixed. I lost all my emails in Kontact. Contacts and rules still seem to be there but no more emails (even tho the directory structure still exists).
In my backed up directory there’s content in “share/apps/kmail/mail/.inbox.directory/gmail/cur” and the same content can be found in “/home/reg/.kde/share/apps/kmail/mail/.inbox.directory/gmail/cur” but the folders in Kontact don’t contain any old data, why not? Why did I “lose” my old emails? How can I get them back?

Thank you! >:(