I think that DOP (Direct Offline Process) in Cubendo is conceptually flawed and I have been holding off from from upgrading from N7 for this particular reason.
For me offline process includes operations that can only be done offline (ie not as a plugin in the channelstrip). This includes all kinds of manual editing of pitch, timing and noise removal. Izoptope RX and Autotune Graphical mode beeing two of those.
DOP allows you to change processes earlier in the chain and then the later processer recalculate. But what if you change timing in melodyne/variaudio and then try to remove a mouth noise with rx at a specific word. I can’t see how this ever will fully work.
DOP like it is, makes sense for a lot of things. But implementing it broke a really valuable tool that I and many more used a lot.
ARA2 is a work-around that helps some of the time but doesn’t let me select a range of audio (with the range tool) and just process that. ARA doesn’t allow me to go back and forth between spectral repare and variaudio. And ARA doesn’t like me to do DOP stuff over it any way.
I don’t clean all my tracks from start to finish with RX first and go through them and tune everything and then start mixing. I fix stuff that need fixing when it becomes necessary and the old offline process allowed me to to that.
So, bring back the old offline process. Put it “first in the chain” before all the DOP stuff. It can still have undo of the “remove processing” type. Because I can’t see how DOP ever will be able to fully work with all the manual stuff anyway.