Toggle block loses its contents when converted

Toggle block loses its contents when converted

If you create a toggle block, add content to it, and convert it to another block typ, the content is irretrievably lost.
Even converting back to a toggle block will not bring back the former content.

The expected behavior would be that when the toggle block is converted, the toggle function dissolves, but the contents of a toggle block would still be preserved.

An alternative possibility would be not to offer the convert function for toggle blocks at all, since a conversion makes no sense if existing contents fall victim to it.