Minecraft Legacy Console – Ocean Monuments on Xbox One

NPC Villages were added to Minecraft in beta 1.8, which the current XBox edition version is based on. However, Villagers themselves were not added until beta 1.9, which the next major XBox version will be based on.

So, within the current version/patch, the village will not populate, since Villagers are not in the game yet.

Once the XBox edition is updated to later versions of Minecraft, there is hope that you can populate your villages. I don't know if they will make Villagers automatically spawn in existing villages, but even if they don't, you have hope according to the answers to this question: How do I create villages? (That is, by curing Zombie Villagers)

This should not make any difference what so ever as clearing the cache only removes temp files and old files that you have adjusted. Save files should not be touched and they can't even be touched by the cache. These problems are not related to each other.

Stated on the xbox FAQ is :

The most important part of clearing the cache is knowing what to expect. All downloaded game updates will be removed. So if you have downloaded an auto-update for a game, in order to play it on Xbox Live you will need to re-download it.

**** User game saves, profiles, demos, videos, etc. are not deleted during the process.**

Note the last sentence.

This however does unfortunately mean that if you cant seem to get to your save file in the minecraft world it has been lost. My guess would be that something went wrong while re-downloading the updates and that during that process your save file got corrupted. Minecraft then automatically fixes that but in your case that meant that it created a whole new .world map.