Transform to RectTransform Conversion

Our artists animated a “cutscene” of sorts in Unity. However, it was only when it was done that we realized we had to use it as a UI element instead so it needs to be under a canvas (for ease of layout-ing, rendering on top of everything else etc). Is there any way that I could convert that to a rect transform, or would it be easier for them to just re-do the animations using a RectTransform instead of the normal Transform?

Select all “offending” to-be-RectTransforms → Add Component → Rect Transform → BAM!

Pretty sure you figured it out by now. Just trying to save people time.

Just to have more clarity
Add Component → Layout ->Rect Transform