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    Type:Task 
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    Resolution: Unresolved
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    Priority:L3 - Default 
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    None
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    Affects Version/s: None
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    Component/s: backend
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        Not defined
Context:
Currently data upgrade steps may not fully work on rolled over indices in the sense that they operate on the alias but only one index can be a write index at a time. Furthermore other upgrade steps like Delete Index may also not delete the templates correctly
AT:
- ensure update data steps update data across all indices in a rolled over index setup
- ensure DeleteIndex steps operate as expected in rolled over scenarios (all indices + template gone)