I had influxdb 1.8 and update it to influxdb2 but facing some problem my 3 months old data is not showing

I had influxdb1.8 and updated to influxdb2 before update I took backup of data directory, wal directory too but what is happen in grafana dashboard after checking the 3 months old data is not visible and I am using the old data source as default which is showing the 5,2,90,30 days data absolutely fine. What should I do? Any suggestion please

Hello @wariku_shivi,
Do you have a copy of the backup?
You could try to perform the upgrade with it again: