PublicAPI: Duplicate tag after import when tag already exists but integration not

(Migrated from https://github.com/syndesisio/syndesis/issues/6360)

Author: Matej Králik
Assignees: Dhiraj Bokde,

This is a...

[pre][code]
[ ] Feature request
[x] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report [!-- Please search GitHub for a similar issue or PR before submitting --]
[ ] Documentation issue or request
[/code][/pre]

Description

When I import exported integration with a tag which already exists in the Syndesis, the tag is duplicated. This happens only when the integration which will be imported is not in the Syndesis.
E.g.
I create Integration1 and tag1. I add tag1 to the Integration1 and export zip file according to that tag.

curl .../integrations/tag1/export.zip -O

After that, I delete Integration1. The tag1 still persist in the Syndesis ( fix for https://github.com/syndesisio/syndesis/issues/5917).
I import back the exported zip file

curl .../integrations -F data=@export.zip -F environment=second

After that, the tag1 is duplicated.
!image

However, when I do the same steps but I don't delete the integration, the tag1 is not duplicated after importing. So it looks that this issue is caused by https://github.com/syndesisio/syndesis/issues/5917 fix.