Yes, assuming you did not received a 1098 from your new mortgage company you can use the 1098 from your previous Mortgage company.
As far as filing taxes goes, claiming a tax deduction for mortgage points is a fairly straightforward process. Mortgage points are considered an itemized deduction and are claimed on Schedule A of Form 1040. Here are the specifics:
For many taxpayers, the process really is this simple. In some cases, though, calculating and deducting mortgage points can be tricky. With TurboTax, just answer a few simple questions and we can help you get the proper deduction for your mortgage points.
Be sure to review the articles at these link(s) to determine if your points are fully deductible or if they must be deducted ratably over the life of the loan.