updating CheckMK fails due to autocheck migration failing with 2.7.0 if jobs have been discovered

[mbunkus]

CheckMK: now 2.3.0p6.cee
Plugin version: 2.7.0

What happens: when I update CheckMK (e.g. from 2.3.0p5.cee to 2.3.0p6.cee or from 2.3.0p6.cee to 2.3.0p6.cme) the update stops in the middle with the following error message:

 05/06 Autochecks...
veeam_o365jobs: Migration failed: params={'jobId': '4909334d-63e1-4313-856f-ce0ace8e2280'} for plug-in 'veeam_o365jobs': 'jobId'.
You can abort and fix this manually. If you continue, 1 service(s) on 1 host(s) will be lost, but can be rediscovered. Abort the update process? [A/c]

At this point I have to continue the process. However, all services that the veeam_o365 plugin has detected have vanished after the update. I have to re-discover them. After re-discovering them the plugin works fine again.