SLA error calculation

Hello Community!

I try to change in SLA module.

In slamodulecontrol  for probsummary table i change Start Time Field (old value - open.time to new value hpc.st.work.time). But, when i create interaction and escalate this interaction to incident field next.breach as before calculated by field open.time. I try to search custom calculated for this field in format control, process, triggers, script library, do, link but i did not find any custom calculation for next.brech(sla.expire) field.

In table sloresponse field start.time hase a correct value, but field expiration.time calculated by open.time.

Tell me please how to fix it?

My system HP Service Manager 9.35. One active SLA.