Ok, now I understand!
Currently, the "overwrite" option is just removing the old site and cloning the new site. So, as you can see, it's not really "overwriting", it just simulates this operation.
I'm scheduling right now these two improvements in our release plan for the next year (v1.17.0 maybe):
- Support for custom DB data when cloning a site.
- When cloning a site, the "overwrite" option should preserve the original DB data.
Thanks for reporting these improvements.
Regards.
Edit: Support when cloning does not make sense, if we can do it when creating the site and preserve it when overwriting it, it's enough! Now scheduled for v1.16.1.