Symptom
When trying to disassociate a member of a port-channel and keeps the interface member as a standalone interface.This operation gets saved without any issue, however when we try to deploy, the deployment gets failed at 40% and after that this interface is disappeared from Lina and as well as from the FMC
Conditions
FTD on 2100 platform using portchannel configured interfaces and then removing member interfaces from previously configured portchannels
Workaround
Preventative workaround only: unassign member port from one Port-Channel to another Port-channel directly instead of moving to a standalone