Just had this same issue happen to me today. The realm owner downloaded the realm and exported. I (a different user) imported the file and opened in single player. I now have all the previous owner's inventory, armor, and enderchest items.
This is Windows 10 Bedrock, 1.12.1, 713,335KB .mcworld file
Just had this same issue happen to me today. The realm owner downloaded the realm and exported. I (a different user) imported the file and opened in single player. I now have all the previous owner's inventory, armor, and enderchest items.
This is Windows 10 Bedrock, 1.12.1, 713,335KB .mcworld file