Support Advance Interest Timing for MM Deals

Currently, for Yield style MM deals in Qt, you can't specify an interest timing = Advance. Qt always assumes Arrears. Interest in advance is quite common in the Brazilian market (request is for FCA) for borrowings and guarantee fees.

You can customize the deal in Qt to replicate interest paid in advance, and Qt accepts this but that is not a long term viable work-around, given that FCA currently have 40-60 of these type of borrowings, additionally some are also amortizing (amortization can only take place on interest payment date). 

Interestingly, interest timing = Advance is supported in Analytics and it automatically and correctly generates the deal map. However, when the deal gets replicated in Qt, Qt ignores the Analytics deal map and creates its own with interest timing in Arrears. 

I see two possible solutions:

1. Provide an interest timing option for Yield type formulas in MM/Sec deals which then would generate the interest to be paid at the beginning of the period. It would need to need to support floating and amortizations, however rate sets and amortizations would occur on interest calculation dates. Since Analytics already supports this functionality, it may make sense to use Analytics to generate the deal map in a similar manner is currently done with P&I formula. 

2. Create the deal in Analytics and force the Analytics deal map into the Qt deal map. This would still result in the Qt deal map to be customized, but at least this wouldn't be done manually. Apparently, this is currently done in certain scenarios, but that needs to be confirmed with an Analytics BA.