Hi FierceHamster54 ,

Does squashing two datasets deletes the two original datasets ?

I don't think so. Should just create a new one.

Is it possible to edit tags using the SDK on a finalized dataset ?

I think so. I don't se a dedicated method for this on Dataset module but Datasets are basically tasks so you can fetch the dataset task and then use Task.add_tags()
https://clear.ml/docs/latest/docs/references/sdk/task#add_tags