If you and your team are moving from Jira Server/DC to Jira Cloud, there are several points you should be aware of.
There are some feature differences
Configuration won't be migrated automatically by the Migration path Atlassian provides
For the core part of Excel-like Issue Editor for Jira, the user-facing features are similar between the different hosting versions. However, some features are different. We recommend you test the needed functions in your testing environment.
Verify that all the needed features exist on Jira Cloud
Check the Supported platforms
Install Excel-like Issue Editor for Jira on your Jira Cloud instance
Manually set the Date/Time Configuration
Manually set the Permissions if required
If you have any questions, please get in touch with contact our support team.
Check out this article if you are migrating from Cloud to Cloud. How to migrate Excel-like Issue Editor from Cloud to Cloud