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Exclusion of Signals Across Hierarchy for Toggle Coverage using CCF File

WA20250805177
We are currently working on excluding specific signals from toggle coverage in the top-level module using the exclude.list file in the CCF. The exclusion is applied using the following regular expression:
-ere module top\.req_pkt.*\.ovlddeep
This works as intended for the signal instance in the top module. However, the same signal (ovlddeep) is propagated down to lower-level (descendant) modules through hierarchical connections. We expected the exclusion to apply to these lower-level instances as well, but it appears that the exclusion rule only targets the top-level instance. As a result, we would need to write separate exclusion rules for each module where the signal appears.
Query:
1) Is there a way to exclude a signal (e.g., ovlddeep) across all hierarchical instances from the top-level down, using a single rule or a more generic approach in the CCF file? 
2) Are we missing any specific syntax or configuration that enables hierarchical exclusion for toggle coverage?
3) If not supported, can this be considered a limitation, and are there recommended best practices to handle such cases?
Objective:
Looking for a scalable and maintainable method to exclude signals passed through multiple levels of hierarchy without duplicating exclusion rules for each module instance.
Thanks,
-Wadood

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