Home Office Tax Line Item in Quicken H&B?

How do I get the proper percentage for my home office expenses to show in the ongoing reports? (i.e., How do I enter the percentage of rent and utilities it should actually use when calculating business expenses?)

Since I have a home office, I have connected the rent and utilities categories to tax line "Form 8829" so that I can take the home office deduction. When calculating the home office deduction I use (say) 1/4 of my apartment as the office, so 1/4 of the rent and utilities are business expenses. TurboTax calculates this correctly when preparing my taxes by asking how much of my apartment constitutes my home office (25%) and only using that percentage of the total.

However, in the monthly profit and loss calculations, Quickbooks H&B treats the _entire_ expense for rent and utilities as a business expense, not just the 25% that actually is. Therefore my monthly business expenses in these major categories are four times what they should be--making all of the Profit/Loss numbers completely inaccurate.

Since actual home office expenses (as Tax Line Item Form 8829) are by definition only a percentage of the total paid out, there has to be a way to address this.

The only work-arounds I can come up with are:

-- to split each entry as I make it into two separate categories (75% to "apartment rent", 25% to "Form 8829 business expenses rent"), but this is not only a tedious way to enter them, it means that at tax time I will have to go through and manually recategorize _all_ of these transactions as "Form 8829 business expense rent" so that TurboTax can take 25% of the total for its calculations

-- to remove the tax line item connection completely, meaning that I am able to see none of my home office expenses during the year, _and_ that I have to change the category association at tax time so that TurboTax can deal with it properly.

Considering that TurboTax deals with this quite efficiently, and considering the amount of formulas for various uses in place in Quicken, I can't see how something as simple as an instruction to "always use only __% of Form 8829 expenses when making business expense calculations and forecasts" could be
missed. And surely I am not the first person with a home office to be stuck with an all-or-nothing scenario that makes all of the business estimation and tracking numbers hopelessly inaccurate.

Help?
(Sorry if this sounds a bit cranky, but it's mostly verbatim from support emails I sent to Intuit. Their rep essentially never could understand my question and I gave up. I'm hoping you all can help. )