Can I take full deduction for a mortgage refinance were we pulled money out to purchase property for a new home, this was done prior to the change of the tax law of 2017

[Opus 17]

No.  That particular rule wasn't grandfathered.  If you have a mortgage secured by home A, the interest is deductible only if it was used to buy, build, or substantially improve home A.  If you take out a mortgage on home A in order to buy home B, then it counts as equity debit on home A and is not deductible.