Elektron Musical Instruments

I was just trying to record some MD knob-movements into my sequencer (MPC).
It didn\ufffdt work, so I tried to connect the Midi Thru to the Midi In of the
MPC.
(I remember that with the Sidstation one OS Update was only possible
with Midi thru or so).
Mistake.
The MPC crashed and the work of the past 2,5 Hours is gone.

Flo