Migrating loki data from loki running in binary to loki running in helm chart (micorservices)

Hello
I am migrating the loki running as binary standalone to the loki in helm charts.
I am trying to move the data across but not really sure where it will be going.

In currently loki instance, mount dir has folder like:
compactor tsdb-shipper-cache
chunks>fake tsdb-shipper-active wal

And in kubernetes loki, mount dir structure is like:
chunks >
default index loki_cluster_seed.json self-monitoring

So I am confused where to copy the data chunks or indexes and how to do that.
Do we need to do any mappings for the migrated data in the values.yaml or in the manifest.

Any help will be appreciated.