Nuxeo Drive transfer failed after removing hardware

Following SUPNXP-38815, steps to reproduce:

1. Plug an external hardware with content in it
2. Start a direct transfer using the content from the hardware
=> the transfer starts.
3. Remove the hardware without waiting for the transfer to be completed.
=> the transfer failed.

Actual result:
=> when plugging back in the hardware the transfer doesn't start again, you need to start a new one.

Expected result:
=> When plugging back in the hardware the transfer should continue where it was left.