Ah, here we go. Ryan's step-by-step list:
1. Connect your Vita to your computer.
2. Load up Content Manager Assistant (which you can download from here:
http://cma.dl.playstation.net/cma/win/en/index.html).
3. Run Content Manager on your Vita.
4. Select Copy Content.
5. Select PS Vita System --> PC.
6. Select Applications.
7. Select PS Vita.
8. Select SENRAN KAGURA SHINOVI VERSUS and touch the Copy button. This will copy over your core game data, including all your DLC, to your PC.
a. If you have Bon Appetit! on your Vita, copy that over as well in the same manner then delete Bon Appetit! from your Vita. Otherwise, the bugged DLC will still be there, since Bon Appetit! uses it too.
9. Now to get rid of your Versus DLC on your PC. Open Documents\PS Vita\APP. (If you have a Mac, that should use the same file directory system for Vita games, so you should be able to follow along with the instructions below.)
10. Within the \APP folder, open the most recently modified sub-folder.
11. Within that most recently modified sub-folder, youll see at least one folder beginning with "PC", followed by two more letters and five numbers. The folder for Shinovi Versus will always be "PCSE00398". Open that.
12. Within PCSE00398, theres a folder called "addcont". Delete that.
a. If you have Bon Appetit!, itll be in another folder called PCSE00471. Delete that folders addcont folder as well.
13. On the Vita, quit out of Content Manager, then open Content Manager back up again. Choose Copy Content again, but this time, on the next screen, choose PC --> PS Vita System.
14. Choose to copy Shinovi Versus (and afterwards, if you have it, copy Bon Appetit! in the same way). If the system asks whether you want to overwrite any existing content for either title, say yes.
15. You should now be able to boot Senran Kagura and access your existing save data. Youll unfortunately need to download any DLC you have from the Store again, but you can do so without charge from your personal Download List on the PlayStation Store.
16. Please stay away from the Rainbow Panties, Emoji Set, and Accessory Set 2 (which includes the Emoji Set) until further notice. Were working to get those items fixed now.