You can edit the constraints of the data models to exclude indexes. Out of the box, the data models strictly use tags to collect data. E.g., tag=network AND tag=communicate.
You can easily modify this to be: tag=network AND tag=communicated NOT (index=myindex1 OR index=myindex2 ...)
After modifying, you do need to kickoff a rebuild so old data accelerations are rebuilt.
Another approach would be to modify the TA's, and in the eventtypes where the CIM tags are associated, specify or exclude your specific indexes.
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