Support flow deletion at V44+
if the target flow is deactivated; and all prior versions are deleted, you can't delete the last remaining flow version in the target org. The error you get is "Insufficient access rights on cross-reference id".
Copado provides a solution (https://docs.copado.com/article/8l069zes9f-destructive-changes-in-copado-doesn-t-support-flow-and-process-builder) wherein the user can specify the contents of the destructive-changes.xml file (enumerating the versions to delete) but Gearset has no way to inject such a file into a compare/deploy (esp a CI deploy)
with SFDC pushing more and more dev into Lightning Flow, deletions are inevitable in many orgs as things get refactored/renamed
We have added a problem analyzer that will detect when you are deleting a flow, and update the destructive changes xml to include all the versions automatically.
Thanks for the suggestion!