Change type of redirect - from 302 to 301

[2grosiek7]

hello,

I have two domains actually, first, old page product for example is www.olddomain.com/category1/product1. And I have new domain, and when I am trying to change only olddomain to newdomain, as www.newdomain.com/category1/product1 i got redirect 302 to www.newdomain.com/category2/product1. Is there posibility, to change type of this redirect from 302 to 301?