All goes well when I move a site from the main network to one of the sub-networks (except media urls in post and page content remain like they where, using main.tld/files/... )
But when I move that site from the sub-network (back) to the main network, the sites
Domain is changed correctly but the urls for
Fileupload Url are left to those of the sub-network and the checkmark at "Keep the options 'siteurl' and 'home' up to date." is missing.
Subsequently, trying to access the site via its new domain (site.mainnetwork.tld) results in being diverted to the New Site Creation page.
Placing the checkmark back at "Keep the options 'siteurl' and 'home' up to date." and resaving will get it all working again (except the