Sorry for the obscure subject. I'll explain.

I load a BIAB file with realtrack guitar. I click on VST/DX Synths/Plugin. Select guitar. Select <VST> Amplitube 3. Select "Soft jazz echo" for the guitar. All works as advertised. I save the BIAB file. Close BIAB. Relaunch BIAB and play the song. No amplitube. I click the plugins, and sure enough amplitube 3 is connected to the guitar, but no audio is going into or out of the vst. If I click 'none' to remove amplitube and then select amplitube again for the guitar vst, viola, amplitube works, and guitar input and output as expected. Quite an annoying habit, as I lose the settings when reclicking amplitube the second time. (I am aware I could save them as a bank.)

What is going on and how do I prevent this?

Thanks for the help,

Bob aka jazzwombat