Minecraft Bedrock Beta World Export

hello Mojang! I first off want to say how fun playing Minecraft has been. it's been so fun playing with my siblings in a Minecraft world together. so far, all the beta features have been great to explore and the game has been going smoothly. However I have a concern regarding the beta. The most important one being the loss of the world export option. my siblings and I want to export our world and download it again in Minecraft Bedrock, but not the beta version, in order to play in the different servers and just connect with others not on beta. However due to the files automatically being set to application, we are not able to just leave beta and download the game again. We were hoping for there to be an easier way to export or backup world's to external, that or you make it possible to leave beta and still keep our worlds. We don't want to lose our world but we also want to connect and play with others. The lack of this button and lack of ease makes it difficult to play sometimes.