Remote publishing does not work on already existing space

Steps to reproduce:
1. Create a space "test" with version "1.0"
2. Create a page "page1" in version "1.0"
3. Publish version "1.0" to a remote new sapce
4. Publish again but this time to existing remote space

Expected result:
Version should be published to existing remote space.

Actual result:
The UI displays a NullPointerException and refuses to publish