Part of the setup you need to do in BigAgile when creating a new increment is to map the sprints to their equivalent in your team tool of choice (Jira/AzureDevOps).

If you're using AzureDevops and notice some Sprints are missing from the list, it might be due to a common setup issue.

When creating Sprints/Iterations in AzureDevOps, you need to add them to the Project Configuration section.

You need to remember to also add the Sprints/Iterations to the Team Configuration.

Once you've added the Sprints/Iterations to your Team Configuration, they will appear in the mapping dropdown list in BigAgile.