all of my contacts are still stored in the phone storage.
within the contacts app there doesn’t seem to be a way to move the contacts from the phone storage to the e-account.
but to click on “importing contacts” within my murena account and importing the .vcf file gives an error message. it says “200 errors” (number of contacts).
You can copy the vcf file to a computer ( after export contacts) and then re-use it with a new phone (copy back → import contacts).
I see little use for storing contacts in e account (other than having an extra backup).
Is the problem about a .vcf generated from this source? There are tools out there, or Linux scripts, which will convert a .vcf to a certain version. You can also clean up a .vcf by hand.
Within Contacts > Settings > Import is the opportunity to import from SIM card. Did you try this?