[Bug]: Export Import Addressbook Bug

[caemor]

⚠️ This issue respects the following points: ⚠️

• [X] This is a bug, not a question or a configuration/webserver/proxy issue.
• [X] This issue is not already reported on Github (I've searched it).
• [X] Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• [X] I agree to follow Nextcloud's Code of Conduct.

Bug description

I exported the address book from one nextcloud instance and tried to import it another nextcloud instance. Sadly some contacts get lost in this process.

Since the names for the contacts with errors are not shown on the import dialog I wasn't able to find and test all of them manually (or even able to fix it manually by adding them all once more manually).

But below is one contact which I found quite quickly. The data is slightly changed for anonymization.

Steps to reproduce

BEGIN:VCARD
VERSION:3.0
FN:Anna Köhler
TEL;TYPE=VOICE\,CELL:+49 1681 9999999
UID:598fad18-2e85-4699-a859-ebc7c2c39985
BDAY:1993-07-19
N:Köhler;Anna;;;
PRODID:-//dmfs.org//mimedir.vcard//EN
REV:2016-11-06T18:50:17.150Z
CATEGORIES:Familie
END:VCARD

1. Try to import the minimal vcf and get the error

Expected behavior

The imported contacts should be the same contacts as before.

Installation method

Other

Operating system

No response

PHP engine version

No response

Web server

No response

Database engine version

No response

Is this bug present after an update or on a fresh install?

No response

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• [X] Default user-backend (database)
• [ ] LDAP/ Active Directory
• [ ] SSO - SAML
• [ ] Other

Configuration report

No response

List of activated Apps

Can't do this on the new server (a fresh hetzner storage share).
But its the basic setup + contacts + calender

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

I updated the old exporting instance through 22.3 up to 23.3 The new one is 23.2. I tried the import on both servers on various versions with new exports on each version step and it still didn't work.

[caemor]

The active apps on the new instance:

[buarle]

Same here. Exported from Google contacts and imported to Nextcloud:23 on docker with latest contacts app. 8 out of around 180 contacts are missing. This is reproduceable.