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Werk #19997: Fix: Saving rule with predefined condition no longer drops the link

Component Setup
Title Fix: Saving rule with predefined condition no longer drops the link
Date May 20, 2026
Level Trivial Change
Class Bug Fix
Compatibility Incompatible - Manual interaction might be required
Checkmk versions & editions
3.0.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p6 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Editing or creating a rule that referenced a predefined condition silently turned the rule into one with explicit conditions. The link to the predefined condition was lost on save, so later changes to the predefined condition no longer affected those rules.

This affected newly created rules as well as pre-existing rules whenever they were opened in the editor and saved again.

The fix only prevents the link from being dropped going forward. Rules that already lost their link to a predefined condition before this update are not restored automatically. To repair them, open each affected rule, select the predefined condition again and save the rule.

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