I went to drag an attached file with comments associated with it into a subtask that was created and found that this option was not available. Although we haven't come across this as a need in the past, we were surprised that it was not available as it seems like a logical option. You can drag a task into another task, turning it into a subtask... this seems like a parallel concept.
Thank you for your feedback! Now other members can find, vote, and discuss your idea.
Our Community Team reads every suggestion (yes, every one) then compiles and shares the feedback with our Product Team. Happy posting!