Hi Alphisto,
Do you just mean the viewport camera or are you talking about Sequencer cameras that you’re looking through?
If it’s sequencer, I’d suggest setting one key to the transform track at the start of the sequence to ensure that the cam snaps back to that location.
If you mean the viewport camera, I’d suggest using the camera bookmarks feature:
Viewport Camera movement is not something we plan to support in the undo history.