Shards for "Blast from the Past" tied to account

I was able to work through this but I wanted to point out that it can be an issue when items from the events are tied to the save file the event was started with. 

For instance, the Shards from this challenge cannot reappear after being found. My daughter plays Sims sometimes as well, and she has a habit of deleting her save files (which is BANANAS to me, but there is no convincing a 10 year old how to game). I changed save files to continue the event, and realized it was not possible to continue the event on my main save because that person did not get the Shards. 

So this is more of a question/ suggestion: If there is specific items tied to an event, when a new file activates that event previous mandatory items other files have gathered should autopopulate the file that is being played, otherwise issues can happen (such as gathering the metal on one file and the shards in another). 

No shade though, I seriously love these events and I think they are brilliant. Good work Sims team!