I basically scrubbed my 'old' cluster after a number of failures trying to convert a physical engine to a self hosted engine, anyway....

I'm now trying to import the 'old' export domain but I'm getting this message:

There is no storage domain under the specified path. Check event pane for more details.

I did see this in the logs if it helps at all:
2016-09-19 18:05:23,584 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.DisconnectStorageServerVDSCommand] (default task-28) [171c3ebf] FINISH, DisconnectStorageServerVDSCommand, return: {5c4ae7b4-b87b-4ef1-910c-cb338232098c=0}, log id: 7d3bbb38
2016-09-19 18:05:23,589 INFO [org.ovirt.engine.core.bll.storage.connection.RemoveStorageServerConnectionCommand] (default task-28) [171c3ebf] Lock freed to object 'EngineLock:{exclusiveLocks='[nfs.example.com:/exports/export=<STORAGE_CONNECTION, ACTION_TYPE_FAILED_OBJECT_LOCKED>, 5c4ae7b4-b87b-4ef1-910c-cb338232098c=<STORAGE_CONNECTION, ACTION_TYPE_FAILED_OBJECT_LOCKED>]', sharedLocks='null'}'
2016-09-19 18:05:25,587 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.DisconnectStorageServerVDSCommand] (default task-18) [35dda2c9] FINISH, DisconnectStorageServerVDSCommand, return: {5c4ae7b4-b87b-4ef1-910c-cb338232098c=0}, log id: 151ff1bd

dom_md/metadata file on the export NFS directory begins with

CLASS=Backup
DESCRIPTION=export

Any suggestions ?