Hello,
after creating a new feed that use an input already recorded from a long time. Is it possible to build its data from the past?
No.
Inputs are not recorded. It is only when you “Log to feed” that data is saved.
That’s clear, I understand that.
But once I “Log to feed” say input1, so I have the original feed of that input recorded. If I had some new process (and destination feed) in the chain, can I build all the data from the past?
I suppose I can use a virtual feed, but if I would like the have them already processed in the database could I?
That is not the question that you asked at first. I don’t know the inner workings of emonCMS well enough to answer the revised question.