There are a couple of bugs in MR that affect the creation of a YTD Cash Flow Statement, or the ability to report on YTD Activity using the "1 TO BASE" functionality.
1) Bug #23940 - The beginning balance for an account with a normal credit balance has the sign reversed
In the tried & true YTD Cash Flow Statement from the old FRx demo reports, and from the MR demo reports, the YTD calculation would typically involve pulling the YTD Beg. Balance, then the YTD Balance for the Base Period, hiding those columns but then doing the math on those two columns to compute the YTD Activity. However, as the description above indicates, accounts with a normal credit balance (in this case, Liability & Equity accounts on my Cash Flow) do not appear properly in the YTD Beg. Balance column. The signs are incorrectly reversed. Only for "normal credit balance" accounts, and only in the YTD Beg Balance column.
2) The 2nd bug (I don't have a number for it) relates to pulling YTD Activity into a single column using the "1:BASE" and "PERIODIC" elements (formerly "1 TO BASE" and "CUR" in FRx). It don't work. It only pulls the base period, not all period up thru BASE as it should.
After discovering the problem in #1 above, I was hoping to do a work-around by using the "1:BASE"/"PERIODIC" functionality in #2 above, but MBS told me they already know that's a bug. So, my next option was to load individual columns for each period, N-P them and then add them together to get the YTD Activity.
MBS is hoping to have these issues corrected in the next release of MR. This was as of March 14, 2012.