Refinancing IP

Hi, I am currently purchasing my 3 IP, this will be my first IP with my partner, it will be in joint names, I am drawing some equity from my 2 IP to do this and have to refinance the loan, the bank has put the new loan for IP 2 in joint names but the title and everything is in just my name, how is this going to go come tax time when claiming interest etc?
Hope that makes sense thanks in advance.
for those that have twouble with the ATO jibberish :)

I will try and paraphrase.

the asset is bought in joint names, any lending to purchase this asset will be deductible against the income from that asset, regardless of the security used.