@SHANAVASH MOHAMED welcome to the Atlassian community.
If you are trying to merge two pages on separate instances I would suggest copying and pasting the content into the other page. If there are a lot of pages then you could back up the pages on one instance and restore them to the other instance. There are really no tools or ways to automate this process or take the manual element out of it.
We’re excited to introduce external collaboration for Confluence, now available in early access. It is available to preview for Confluence Cloud Premium and Enterprise customers. (If you're not on ...
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