Keep existing versions (Cloud)

In the example below we have the following set-up in Jira:

To share versions/components from the VCS - Source project, we will create a project link with project VCS - Target 1

Select the project(s) you want to link to the Source project. Versions from VCS - Source will be propagated to selected project(s)
After selecting the desired projects to link to VCS - Source, click on Next: synchronisation

In this example we will use the default Scheduling
To ensure existing versions maintain in VCS - Target 1 we will uncheck the Delete trigger. All other triggers will remain checked.
- Keep in mind that unchecking the Delete trigger means that none of the ‘Delete’ events will be synchronised. The deletion of a version/component in the VCS - Source project will no longer result in the deletion of the version/component in VCS - Target 1.
- Unfortunately, there is currently no option which will preserve manually created versions/components in Target project(s) whilst also synchronising the delete events in Source projects to the corresponding versions/components in the Target project(s).
  
  This limitation comes from the fact that the app has no means to determine if a version/component was manually created in the Source project(s).
Click on Next: filters

The app will now show an overview of the versions that will be synchronised from the source project to the target project

By creating filters you can control which versions are in-or excluded from synchronisation
In this example we will not use any filters
Click on Next: confirmation

The app will now show an overview of the project link(s) you are creating
Click on save, to save the project link(s)
Upon clicking on save, the app will:
- Start synchronising
- Shown an overview of the created project links and their current status

To edit or delete a existing project link first navigate to the Version & Component Sync page in the target project or click on the Linked project link in the source project
Click on the Settings tab

To provide you with insights in how the app works, this is what happens during synchronisation:
- Upon creating a project link between Source & Target Project 1 the app checks whether there are versions present in Target Project 1

The app recognises that version 1.0.0 in VCS - Source already exists in VCS - Target 1
The app links version 1.0.0 in VCS - Source to version 1.0.0 in VCS - Target 1
This links ensures that any and all version changes to version 1.0.0 in VCS - Source are synchronised to version 1.0.0 in VCS - Target 1

The app recognises that version 2.0.0 does not exist in VCS - Target 1
The app creates version 2.0.0 in VCS - Target 1
- Jira does not allow you to link a single version to multiple projects. Therefore the app needs to create ‘new’ versions in VCS - Target 1
The app makes sure that upon creation of the ‘new’ version 2.0.0 in VCS - Target 1 it is linked to version 2.0.0. in VCS - Source
This links ensures that any and all version changes to version 2.0.0 in VCS - Source are synchronised to version 2.0.0 in VCS - Target 1

The app recognises that version 3.0.0 in VCS - Target 1 does not exist in VCS - Source
Due to unchecking the delete trigger the app will not delete version 3.0.0 in VCS - Target 1