Allow hard coded drill through filters
Currently, if you want to have a target report support multiple parent reports, based on a flag, and drive to it from a chart, you need to jump through considerable hoops.
Basically, if you don't use the field in the chart, e.g. Is Latest=true, you cannot pass it through the drill through. You can sort of work around this by creating a filter that you pass through. However, that filter cannot have a defined value, but must be a user prompt filter. You can set a default value for the filter, but, then the user must see that value in their report filters.
It would be ideal if you could:
1. Pass through a non-user input to a drill through report
2. In the definition of the drill through filter linking, include a hard coded value for the filter field/filter join.