Did the levels carry over to LBP3? I can't remember. I did buy DLC too for the first 2 which my levels use, hmm. I should check it some time yet I removed it a while ago to make room on the HDD. With less than 50GB free it won't download patches, perhaps it's very fragmented by now. Could just check it on ps3 if can find a controller for it :)
Yes, all the levels carried over but a lot of the DLC I bought was flagged as me not buying it. I was just so annoyed that I sold the copy eventually. The bugs didn't help either.
The PS5 Exists.