Fetch existing threshold per service

Yes, basically you would have to recreate the activation process to compute all the thresholds from the rules for all hosts and services.

The export script is here: check_mk_extensions/helper/bin/showrules.py at cmk2.2 · HeinleinSupport/check_mk_extensions · GitHub

It needs our API wrapper: check_mk_extensions/check_mk_api at cmk2.2 · HeinleinSupport/check_mk_extensions · GitHub