Here are the updates for the following features that are currently not available in the Cloud:
Export to PDF or Word: You can export the Confluence page to Word/PDF but the styling won't be exported. For example, consider Table Plus macro, when you export the Confluence Page to PDF, the table will be exported but the styles/colors won't be exported. Note: The export of CSV/JSON tabe to Word or PDF is not possible.
Jira Issue/Filter macro in Advanced Tables macros: We do not currently have this macro available in the cloud. We are working on something that will enable this macro in the cloud.
Page Properties Report macro in Advanced Tables macros: In the Cloud version, there is no possibility of having "nested tables," but Atlassian has recently released a feature for Confluence called "Table Extensibility." This feature is the closest to the "Nested tables" server functionality. We intend to work on including this functionality in future.
Using customized CSS for tables in macros: It is currently possible to include elements in rows and columns based on CSS. The process is tedious, but it is feasible.
Preview in the macro editor: In the cloud, we have four macros, none of which have a preview as in the Server. We are planning to work on this in the future.
As per the documentation, the details for the other features are updated and Confluence cloud doesn't support it. You can refer to Migration from server/DC to Cloud.