Symptom:
1)	Create a SNMP-Probe:
  probe snmp db_maintenance_1
  port 161
  interval 10
  faildetect 1
  passdetect interval 30
  passdetect count 1
  receive 5
  version 2c
  community xxxxxxxx
  oid .1.3.6.1.4.1.3966.1.3.2.3.1.4.8.100.98.50.109.111.110.112.49
    threshold 1
    type absolute max 1

2)	Do a 'show running-config' (a 'show startup-config' shows the same):Threshold is removed.
  probe snmp db_maintenance_1
  port 161
  interval 10
  faildetect 1
  passdetect interval 30
  passdetect count 1
  receive 5
  version 2c
  community xxxxxxxx
  oid .1.3.6.1.4.1.3966.1.3.2.3.1.4.8.100.98.50.109.111.110.112.49
    type absolute max 1

3)	Do a reload of the standby ACE and then another 'show running-config':

  probe snmp db_maintenance_1
  port 161
  interval 10
  faildetect 1
  passdetect interval 30
  passdetect count 1
  receive 5
  version 2c
  community xxxxxxxx
  oid .1.3.6.1.4.1.3966.1.3.2.3.1.4.8.100.98.50.109.111.110.112.49

both the threshold and Absolute max has been removed from the probe and this cause FT be in standby cold.

Conditions:
Threshold configuration on SNMP probe causing the ACE to be in standby cold