Mortgage interest deduction with and without 1098

I have been following the mortgage interest issue and solutions closely.  My question is that I have one bank mortgage with a 1098 and one mortgage held by the previous owner without a 1098.  The mortgages added together are less than the $750K ceiling. The interest amounts are showing correctly on Schedule A on lines 8a and 8b, however I am not getting the non-1098 amount as a deduction.  

 

Can I add the interests together and enter the total amount to line 8a even though I do not have a 1098 for one?

 

Thank you.