Hi Anis,

> What kind of history ?
> It will be interesting...

Well, basically an extension of MoI's current history mechanism.

Currently history updates work in MoI only if it is able to find all the input objects inside of the current model.

Any objects that have been deleted will break the "history chain", and that includes operations like booleans which essentially work by replacing an object with a new version which means the previous version of the object is deleted.

I'd like to have a general mechanism to store old versions of objects so that a history update could find them and enable longer chains of updates through some commands that don't currently work with history updates.

It may take a lot of work to make that happen though, so I'm not completely sure how it will all turn out yet or if it will even be feasible for me to complete it in v3. I won't really know more until I get a chance to work on it in some more detail in the v3 time period.

- Michael