Hallo Guys 
We recently upgraded from BO4.0 SP4 to BO4.1 SP4 and from BW 7.31 SP7 to 7.4 SP6.
We have webi reports created on a BEx Query. The BEx Query has prompts, the report does not have any user defined prompts, only the BEx query.
Question 1
When we refresh the webi report and the BEx Query prompts appear, we select a few values, and then remove them (like you changed your mind on filtering):
In Modify Mode:
*Notice the back arrow [<].
Using the back arrow to remove the selected values clears the selected values from the prompt:
The report refreshes successfully when we click on OK. 
In View Mode:
*Notice the back arrow [<] is missing and you have to use the cross [X].
Using the small cross to remove the selected values clears the selected values from the prompt BUT navigating to a different prompt and then returning to the cleared prompt:
It populates the cleared fields with [EMPTY_VALUE] automatically. This is only for changed prompts, those originally blank, stay blank. It is impossible to clear this as it keeps coming back.
Clicking OK to run the report returns an error 
Question 2 (not related to the upgrade, we have this in the non upgraded system as well)
The prompts in Modify mode look different from the prompts in View mode. Do any of you know why this is? We have this on our non upgraded system too (4.0). However, we do not have the [EMPTY_VALUE] issue.
Please help!
Kind Regards
Antonette