Each instance of Baseline_engine keeps its own database in <baseline_engine>/cache_dir/threshold.cache.zip.
This is a known issue with baseline engine.
Baseline engine is what actually decides if an alarm should be sent.
This database can get out of sync and it will not update from the template.
There is currently no resolution for baseline_engine for this issue to prevent it from happening in the future (as of UIM 8.5).
Here is a scenario of how this can happen:
You have a robot with cdm installed and you configure time to threshold(TTT).
You then decide you no longer want a robot on this system and delete it.
Some time later, someone installs a robot on this system and installs cdm, without time to threshold.
You will start getting TTT alarms because baseline engine still has the original settings.
There is a manual way to update the baseline engine database to correct this.
Use Option 3 to resolve this in the example scenario of how this can happen.