Hi,This is a real problem, and hopefully will be "fixed" in the future.
In our case, there is f.ex. 1500 conversion events in a month, but when
I use any attribution model except Last Touch, +5% of the conversions
are reported as none (when using marketing channels dimension). After
reading this thread I understand why it is, but we'd still need a way to
attribute the exact amount of conversion to the selected time period,
not so that it would be divided to couple of different months.