Bitcoin help

Ok I have my bitcoin core wallet dumpprivet key of that address which I have the funds but when I try to import the private key in electrum or bitcoin core new wallet or into any platform the address change automatically and shows 0 balance it's not showing me the that address which holds the fund please help me if any one have the solution and one more think the key is compressed I try p2pkh method of electrum but it didn't work and i have only one receiving address but after all this i face this problem again and again