Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
SUMMARY:
This article describes a known defect where the report-level drill settings are not applied to dossiers.
SYMPTOM:
After drilling has been disabled in a report, users expect that users would not be able to drill in a dossier that uses the report as a dataset. This setting is applied when creating a Report Services Document.
STEPS TO REPRODUCE:

CAUSE:
This is a known defect in Strategy 10.x.
ACTION:
Strategy will continue investigating and post updates as soon as they are available.
WORKAROUND:
Add an empty drill map to the base report. The empty drill map will be inherited in the dossier, preventing users from drilling. For additional details regarding custom drill maps, refer to the Report Designer guide.
KB441471