Requires verification and final editing.

If I have more than one SR to be moved, do them one by one.

On source pool:

1. Select SR to be moved and set it as the Default SR
2. Use XSConsole and backup Metadata on that SR to that SR
3. Detach SR
4. Forget SR

Move SR to new pool:

1. Select Storage → New SR
2. Select Re-attach Existing SR
3. Select Restore
4. Select only VMs on this SR

As I understand, you jsut want to add your storage from your standalone host to the pool and then copy the VMs from that storage to the storage of the pool, right?

If so you have to do the following steps:

1. Backup your metadata on the standalone host to the attached storage
2. Detach/forget the storage on your standalone host
3. Reconfigure your storage that the pool can access it
4. Introduce your storage to the pool
5. Restore your metadata in the pool
6. Copy VMs to the other SR

If you are going for the export/import way and you don't want to reconfigure the network settings, you have to use the preserve=true parameter during import. Then all VMs should come up with the same MAC address.