press SHIFT + Traktor Button on your Z2 to switch from virtual to live input. you can not use the thru mode (by pressing only the Traktor button on Z2) to record vinyl virtual vinyl.

Thank you for this. Can you tell me how I setup record a mix playing.45s using 2 turntables, Traktor Kontroller z and Traktor pro 3. I know how to record with the setting for 1 turntable but would like to record a mix using 2 tables. How do I do that using what setting in the software and what setting on the z2 mixer. Thanks again, in advance.

thanks mate! do you know how to record a mix with z2 vinyl-virtual vinyl?

Do you know if there Is there a dedicated 'thru' button on the software? As I'm using a djm 900nxs. Thanks.