USB to MIDI thru

I’m using the animoog with MIDI expansion pack.

Sending MIDI on channel 2 - USB into Slim Phatty - MIDI THRU into VIRUS set to channel 2, getting nothing on the virus.

If I plug the virus into the MIDI out I get signal, but not on the MIDI THRU.

Can anyone give me the correct settings to get MIDI THRU from USB IN.

Check p.32 and 33 of the user’s manual for details about the MIDI I/O options. Make sure MIDI Merge is set to NONE.