Comment # 22 on bug 58383 from Patrick Ohly

(In reply to comment #21)
> Hey Patrick. I think the safest thing to do might be to just sync from now
> on over usb. I wonder if that might be a lot more reliable. Can that be done?

Syncing over USB is not standardized and not supported by SyncEvolution.

I also doubt whether it would work better - if the peer is in a broken state,
it's likely to be broken regardless of the transport.