Remove old 7.x Kibana indices after upgrade to 8.9

Elastic Stack Kibana
1

Hi

I posted my question in "elasticsearch" channel first. I didn't get a response yet, nor did I find a way to move it over here:
Original post: https://discuss.elastic.co/t/remove-7-x-indices-after-upgrade-to-8-x

I would like to get confirmation on which Kibana indices are no longer used and can be removed, because I have multiple Kibana indices which seem to point to the 7.x stack.

Cfr.
image

Thanks!
Christof

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Someone any idea?

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Answer:

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