PPOR loan loan split to convert to IP

A bit of background.

I had my PPOR loan with ING with the balance of 323k and 169k as refinanced amount for future use. When I moved from ING to Westpac a couple of years ago, my broker did the following splits.

Loan 1: 290k
Loan 2: 203k

An year ago, again I did the split of loan 2 for other investment purposes as below.

Loan 2: ~ 60K
Loan 3: ~140k

After a couple of years (now), I have decided to convert my PPOR to IP and i dont have exact nunbers on how much is the left over debt on my PPOR. To clean up this, I am thinking to adjust the loan balances to reflect the loan 1 as purely PPOR loan so it will be easy to claim deductable interest when i convert PPOR to IP but I don't know the exact loan balance on PPOR.

Pls advise if it should be the exact PPOR unpaid balance as ATO might audit in future of they think I am claiming more deductible interest than what its supposed to be. If they audit, how do they know exact number unless I give them and I might not have these numbers handy in future.

Is it ok if I adjust the loan 1 with plus or minus 10k.

Sorry for long story and thanks for reading. Pls let me know if I am missing to provide any info here.

 

It is not just adjusting the balances that are important but splitting the mixed portions into separate loans. Adjusting balances may just mix it further.

seek specific tax advice.

 

Thanks Terry for reply.
Appreciate any inputs from other forum members if they have gone through this situation.