Migration to cloud fails in Confluence 8.0

Issue Summary

Migration to the cloud fails in Confluence 8.0 with an error: 
Tried to import a space export with build number 0. Confluence (build number = 6452) will only accept space imports >= 4515 until current.

Steps to Reproduce

1. Install Confluence 8.0.0
2. Try to migrate to cloud

Expected Results

Successful migration

Actual Results

Migration fails with an error
Tried to import a space export with build number 0. Confluence (build number = 6452) will only accept space imports >= 4515 until current.

Workaround

N/A