I am editing in Premiere, and sending an XML to a colourist working in DaVinci Resolve. All of the tutorials I have seen recommend flattening the timeline into one video layer (eg. There and Back Again - Frame.io). However, I have several sections where the layers are neccesary, and their timing is important. What should I do in order to make sure that the layers can be exported for DaVinci and maintain their place in the timeline?