SharePoint Online: How to Associate subsites to a Hub site-Communications Site

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I copied this site to a new tenant and they lost the hub-association. Please help been session whole day.  Hub Site Association is not showing but new site do associate so now I have more than 60 sub sites created.

3 Replies
Hi,
Subsites cannot be associated to Hub Sites. You can only associate "Top sites" to Hub Sites
I suspect that's one of the reasons Microsoft no longer recommend creating subsites.

@RobElliott you can promote a sub-site to a site collection using a third party tools like AvePoint or Sharegate and then associate it to the hub site. The other option is to create a new site collection then move the subsite content to the new site collection, now you can associate the new site collection to the hub site.