Step to reproduce:

1. On a 7.6.0 cluster, create and run a few of AD jobs,
2. After jobs finish and stop, upgrade the cluster to 7.16.0
3. After upgrade, login kibana and go to Stack Management -> Upgrade Assistant,

Observed:
there are critical warnings about obsolete minimum version of model snapshot

Expected:
A model state created in 7.0-7.9 should not have to be upgraded before upgrading to version 8