Thank you for your response!
I reindex 10b documents, so it will take some weeks.
But what I discovered is that visualisations or discoveries are affecting all the other index patterns except for the one that reindex.
So lets say that we have the "first" index pattern and I want to reindex and named it "test-first".
If you look the results bellow the "test-first" is not affected but the "first" is affected the most.
Index pattern: first 50s, 45s
Reindex - Index pattern: test-first 28s, 28s
No reindexing time period***:
Index pattern: first 14s, 14s, 13s
Reindex - Index pattern: test-first 27s, 27s, 27s
** Reindexing period is the period(months) that data is still increasing(updating)
*** No reindexing time period is the period(months) that is not updating any more because it is finished.
Is this normal?