SYMPTOM:
When "All" is selected in a selector which has "Apply selections as a filter" enabled, the targeted dynamic text field that contains a hyperlink, passes the first attribute element to the linked report as the prompt answer. The desired behavior is not passing any specific answer so data for all elements of that specific attribute are returned.
For example, the following document in Tutorial contains a selector on Quarter which has "Apply selections as a filter" enabled and targets two panels (Text panel and Month panel), the Month panel contains another selector on Month, which also has "Apply selections as a filter" enabled and targets the Text panel as well.
The dynamic text field ("linked text") in the Text Panel contains a hyperlink with the following syntax:
/mstrWeb?evt=4001
&src=Main.aspx.4001
&reportID=98D048574FA9E3E35B7D418A5E5168A1
&valuePromptAnswers={Quarter@ID}^{Month@ID}reportID=98D048574FA9E3E35B7D418A5E5168A1

In this case, if both selectors have "All" selected, the expected behavior for the user would be to not pass any specific prompt answers to the target report in the hyperlink; however it does pass the first attribute element on each selector.
CAUSE:
It is not possible, in Strategy Web 9.0.x, to pass multiple prompt values for an attribute in a hyperlink.
ACTION:
This request has been addressed in Strategy Web 9.2.1. Upgrade to this version to take advantage of this fix.
In Strategy Web 9.2.1, the detail solution is documented in KB38841: How to pass selector answer "All" from targeted hyperlink to a prompt child report in Strategy Web 9.2.1