Ostris training local models

I’ve used Ostris AI toolkit to train LORAs on ZIT and it works perfectly fine. But after I add other Lora’s I started to get really bad outputs when using too many Lora’s. I also tried using that Lora on other trained checkpoints and it never brings out the character. Found out this is not possible and the best way is to train a Lora again but using those other checkpoints models as the base instead of the original