Currently, publishing versioned content to existing spaces is only possible as long as the target space isn't being managed by Scroll Versions as well. When publishing to a versioned space, the Doc-Admin wants to select a version for the target space where the content will be added or updated.
There is currently no workaround to solve this use case, except copying page contents manually to the target space(s).
Please note: Pages from the source (master) space and the target spaces are correlated by their common Scroll Page ID from the master space. If pages are added later to the master space, their Scroll Page IDs differ from the Scroll Page IDs of the pages created manually in the target space.
Confluence 5.5 and higher