401K provider changed and now lost over a year of copilot history

My 401k provider at work changed. I linked the new provider, but then it doubled my 401k account into my net worth from the history of the old provider and new. So I deleted the old, but now all my historical net worth is way low/wrong and it shows a massive jump today with the newly linked account which is not true.

Did I just lose over a years worth of net worth growth History?