Linked issue is lost during the import/export process about jira-azuredevops-migrator

[Alexander-Hjelm]

Hello @roerjo ! Thank you for the detailed repro steps.

Upon reviewing the WitClientUtils, I found that there does not seem to be an check for uniqueness with regards to the link type:

jira-azuredevops-migrator/src/WorkItemMigrator/WorkItemImport/WitClient/WitClientUtils.cs

Lines 42 to 58 in 304e6e2

	public bool IsDuplicateWorkItemLink(IEnumerable<WorkItemRelation> links, WorkItemRelation relatedLink)
	{
	if (links == null || relatedLink == null)
	{
	return false;
	}
	var containsRelatedLink = links.Contains(relatedLink);
	var hasSameRelatedWorkItemId = links.OfType<WorkItemRelation>()
	.Any(l => l.Url == relatedLink.Url);
	if (!containsRelatedLink && !hasSameRelatedWorkItemId)
	return false;
	Logger.Log(LogLevel.Warning, $"Duplicate work item link detected to related workitem id: {relatedLink.Url}, Skipping link");
	return true;
	}

I believe that a potential fix could be as easy as to add a similarity check on the WorkItemRelation.Rel property when filtering the links with the same WorkItem ID.