Hello,
Please check the following documentation.
https://www.ibm.com/docs/en/SS8JFY_9.2.0/com.ibm.lmt.doc/Inventory/admin/c_troubleshooting_no_vm_manager_data.html
Please verify the problem machines are reporting to one of the vm managers you have on the "vm manager" panel
Management>>>VMmanagers
Also verify they are successfully running the "Run capacity scan and upload results" fixlet in the BigFix Console.
#AIX
#Support#SupportMigration