emusonacid! legacy

I have been experiencing problems when loading a preset from a bank into an existing bank.
Its says it loads -but only plays back some samples from the newly loaded preset and fills the rest with the sounds that were already loaded-for example-if i have a preset of samples loaded samples say samples#1-61-and I load in a preset from another bank and that preset has samples #25-70 from its bank-the new loaded preset will play back sounds#25-61 from original bank and only sounds # 62-70 from loaded preset?
Now I don't remember this doing this when I first bought it 8yrs ago?
I bought another one this week and it doesnt do it...so?
Help me please.
Thanks