It's something to consider! Eventually your org will need to migrate to ToolScript, because we are deprecating YAML. At this time several customers have migrated and it seems stable. More can be read about it on this forum announcement.
I just learned that because of it's deprecation, we will no longer be shipping bug fixes for YAML. However this is not a known issue in ToolScript. I looped in Matt McDonald on these updates! If you have any follow up questions, I'm happy to help 