Yes sure, Barry. You can do this using EAC as well 🙂
Please let us know if you still face any issue regarding this issue.
Also to avoid such issues in future, you can use a third-party tool to perform Exchange to Office 365 migration.
One such tool is provided by SysTools Inc. Please refer the link of their product:
https://www.systoolsgroup.com/exchange-to-office365-migrator.html