Loopback connector - member is not removed from workgroups

Hi Experts,

Have anyone had this issue that IIQ is not removing member from workgroups part of the provisioning(remove operation), am facing a weird issue with this loop back connector that some of the them were removed and some not (out of 50 only 12 or 15 removed rest or not), this is happening in prod and could not replicate the same in non prod, appreciate your help for any guidance.

Note: using the SSD V6 version of the loop back connector and not the 1.1 jar version.

Thanks