Confluence Cloud Migration Assistant 3.3.8 attachments missing post migration.

Issue Summary

Attachments missing on the Confluence cloud post the migration.

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. Confluence server with a space containing > 1000 attachments
2. Then migrate the space, with CCMA 3.3.8
3. Both the attachment and data migration will show success.
4. Post-migration you will find attachments missing on the cloud.

Expected Results

Space should be migrated to the cloud with the attachments.

Actual Results

The below exception is thrown in the xxxxxxx.log file:

No errors in the logs.

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available