Vote for this please. And, this has been a feature request for a very, very long time but has been put on the back-burner for a very long time.
This may not be an issue for most but it is becoming increasing frustrating as we elevate in tiers. You, too, may soon have this issue so forget about what tier I am at and think about how this will help you making price changes easier, searching for designs based on date of upload or specific time window, search based on pricing, etc.
We need more search options in the Manage dashboard. Currently they only allow 10k to be viewed. I'm at a tier higher than that. I can't reach/find the other designs beyond 10k and, after having that many designs uploaded, it's impossible to remember the titles of shirts to do searches for.
I can't see all the uploaded designs, can't make price changes on shirts beyond 10k, can't do anything. So, they are dead in the water to me.
Please take this into consideration and vote it up so that Amazon will see that, while this is a very basic tool, it is probably one of the most important tools/features for sellers to have outside of customer data. When in the upper tiers, our hands are tied without it.