Hi BenGee80,
It sounds like you're having an issue where your contacts are saving between two different iPhones. We want to look into this with you. You'll want to start by checking which accounts you have showing on both iPhones. Tap Settings > Passwords & Accounts. Under Accounts, check for any that show Contacts. Then check to see which account is set as the default account by tapping Settings > Contacts. What shows for the "Default Account" here? When you create a new contact this is the account it's created with. If these are listed the same on both devices, you'll want to change it to your desired accounts.
Manage and delete contacts on your iPhone, iPad, or iPod touch
Let us know if this helps.
Cheers!