Incorrect determination of allowable mortgage deduction

I sold my primary residence in April and purchased a new primary residence in June. TT indicates that the interest on the mortgages are not fully deductible. The only reason that would be true per the help and the IRS publication is if either mortgage was above $750,000. However, both home loans were/are below this level, and as can be seen by the dates, they did not overlap. I cannot see why TT is not allowing deduction of the full combined interest amounts. Is it adding the loan values together? How can I tell how it is making this determination and computation? How can I get the correct deductions for all the interest paid?