If your Server site was migrated to Cloud without following the above steps to edit your Storage Format markup then the macros will not be recognized in Cloud:
If that has happened and you catch it immediately, before your Cloud site is open for production usage, then you may want to stop and redo your Server → Cloud migration and follow the above steps for editing your macros BEFORE importing to Cloud.
If redoing your migration is not an option then you must edit the Storage Format on your Cloud instance to change the macros so they are recognized:
|Search For||Replace With|
The "PageWithExcerpt" and "MultiExcerptName" are parameters for the "multiexcerpt-include" macro. You will see those parameters when you find a "multiexcerpt-macro".
Our Storage Editor plugin is an example of a tool that can be used to edit Storage Format in Cloud.
You will need to find all of the pages that contain "multiexcerpt" and "multiexcerpt-include" macros so you can edit the Storage Format on those pages.
The Confluence Cloud search API is not usable for finding the pages with "multiexcerpt" and "multiexcerpt-include" macros. CQL can only find macros that are successfully installed on your instance. It can find "multiexcerpt-macro" macros on Cloud because that is a valid macro that you can and will install on your Cloud instance. However, it cannot find "multiexcerpt" macros that you have imported in your markup from your Server instance. In addition to the limitations of CQL searches, the search API in Cloud is significantly buggy and is not reliable for finding macros in Cloud sites.
If your site is large enough that you cannot find the broken MultiExcerpt macros manually by navigating your site then you may want to consider doing the search on your SERVER instance and then use those results to know which pages need editing on your Cloud instance. The advanced search (using CQL) to find macros is reliable on Server: