[Users] Unknown quota format: vfsv1

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Trying to make a node empty so i can restore it with openvz7
But this server has a old container of a client
ovztransfer.sh failes with the message:
Running quotacheck ...
quotacheck: Unknown quota format: vfsv1
Supported formats are:
  vfsold - original quota format
  vfsv0 - new quota format
  rpc - use RPC calls
  xfs - XFS quota format

is there a way i can fix this so this container can run under openvz7?

Thanx 

Steffan