[PROBLEM] VMware VM direct upload to OLVM 4.3

We are using VMware 6,7 and OLVM Version 4.3.10.4-1.0.21.el7

We are trying to migrate VM via virt-v2v, which works well, when we migrate to the export storage domain, but that costs much time in dependence of more manual activities to internally import and start the migrated vm. When we try to migrate directly to our FC Strogae Domain, we get a failure saying:

"Cannot add Virtual Disk. Disk configuration (RAW Sparse) is incompatible with the storage domain type."

Is there any workaround to get it done?

Our virt-v2v command is:

virt-v2v -ip ~/vc-password -ic vpx://vc.intern%5cOLVM-MIGRATE@vc.lhp.intern/Campus%20Produktion/SVP/$ESX_SERVER.lhp.intern?no_verify=1 $VM_NAME -o rhv-upload -oc