Restore from draft does not restore mockups

If you do the following you can get back a saved draft of an item - which is great functionality!

1. Create a Todo (eg on a initiative) with some description
2. Navigate away from the todo without saving (because you forgot)
3. Go back to the same initiative click new todo - tada: your draft is saved and so it all your work.

However if you do the following:

1.  Create a Todo (eg on a initiative) with some description
2. Create and save a mockup (or attach a file) within that description
3. Navigate away from the todo without saving (because you forgot)
4 Go back to the same initiative click new todo - your draft text is restored but the mockup or attachment are not restored.

My hope would be that the awesome 'restore draft' functionality would extend to mockups or at least if you create a mockup not to make the user experience worse that when you do not create a mockup.