Hello there, @LauraByers-Well ...
In addition to the feedback that you received from @NoahBoswell, I wanted to also point you to a long-standing Idea here in the Community that has had lots of feedback since 2011. The Idea is located at: [Assignments] Move or Delete Incorrectly Submitted Assignments. Currently, the entire process for voting on Ideas is undergoing some changes, so you'll want to read the blog post at: Turning Your Feedback into Better Prioritization and Release Processes: Our Path Forward. But, I would encourage you to follow that first link I provided to the Idea so that if/when it becomes open for voting again down the road, you'll be able to participate in those conversations.
I hope this extra info will help a little bit. Sing out if you have any questions...thanks!