Should this be called every time the app is open?
Would it be possible to check if the user data is absent & only then copy it (so readAndCopyValues() only runs once)?

Will log out work properly?
We should make sure to clear both dbs on logout to avoid repopulating db with the old data

Right now its called everytime the app is open. I believe that will rewrite old data again and again. I can change it like follows:
once the data is copied i can delete old data. Then there is no problem?

Also consider creating a backup for old data. This allows for recovery in case the migration encounters unforeseen issues.

once the data is copied i can delete old data. Then there is no problem?

Good idea, @ajinkyaraj-23
However, migrating back to the older version would result in no user data - we should check with Aswin if that's something we're OK with

Right that's a good question.

We should migrate all the data present in the existing (old) DB, not just root and accounts

Why?
following are the keys which are generated:

Key: b'_devtools://devtools\x00\x01experiments', Value : b'\x01{}'
Key: b'_devtools://devtools\x00\x01localInspectorVersion', Value : b'\x0137'
Key: b'_file://\x00\x01beacon:matrix-selected-node', Value : b'\x01beacon-node-1.hope-5.papers.tech'
Key: b'_file://\x00\x01beacon:sdk-matrix-preserved-state', Value : b'\x01{"syncToken":"s44195095_1_0_1_1_1_1_2556620_1","rooms":{}}'
Key: b'_file://\x00\x01beacon:sdk-secret-seed', Value : b'\x019eca6480-5621-54a9-7c26-9d5cc062bc9f'
Key: b'_file://\x00\x01beacon:sdk_version', Value : b'\x014.2.2'
Key: b'_file://\x00\x01chakra-ui-color-mode', Value : b'\x01dark'
Key: b'_file://\x00\x01loglevel:broadcast-channel', Value : b'\x01ERROR'
Key: b'_file://\x00\x01loglevel:customauth', Value : b'\x01SILENT'
Key: b'_file://\x00\x01loglevel:fnd', Value : b'\x01SILENT'
Key: b'_file://\x00\x01loglevel:http-helpers', Value : b'\x01INFO'
Key: b'_file://\x00\x01loglevel:torus.js', Value : b'\x01SILENT'
Key: b'_file://\x00\x01persist:accounts'

To keep the same functionality as the previous version and lose nothing

We only backup these two keys in backup so i guess, this is good enough, other keys need not be copied and we can still keep the same functionality. Rather trying to copy everything causes more errors.

What about Key: b'_file://\x00\x01loglevel:customauth', Value : b'\x01SILENT' - I believe that's dApp connections, they should be preserved on update I think

I think that will be enough for this fix, but any other flags or keys on the client side will be lost