unable to import fortigate configuration to Fortimanager

[ashraf_fortinet]

Hello 

I am trying to import configuration, it fails and show the below msg 

runtime error -2 "vpnmgr_" prefix is reserved and cannot be used 

this issue happens with one fortigate only and the rest of devices is working fine 

[an_R_key]

Good day,

Did you ever figure out the cause of this problem?

Thanks in advance.

Regards,

R