Note that BMHs are not backed up by default

[carbonin]

BMHs used to add hosts in CIM are not backed up by default. Add a note about this in the DR known issues and document a workaround.

https://issues.redhat.com/browse/ACM-26586

cc @swopebe

[openshift-ci]

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[swopebe]

For this, we can use the known issue task that I sent you guys, which needs to be reviewed by tomorrow to make the final build. https://issues.redhat.com/browse/ACM-25642

Or you can open a doc task for us.

For future, for all changes outside of a typo or something small, we need a doc task of some kind.

[carbonin]

I don't think this is really an infra operator known issue. It more came up because of https://issues.redhat.com/browse/ACM-23254

I guess the goal would be to document all unexpected backup/restore behavior in the backup/restore known issues even though that behavior is related to separate components.

In any case I updated the link in the commit and description to the doc task.

[swopebe]

Great, we have to link either to that task or a bug, as discussed, so it's good to have it. :-)

[carbonin]

Great, we have to link either to that task or a bug, as discussed, so it's good to have it. :-)

I put it in the commit and description