Merging histories

Configuration
1

I was using an integral helper to calculate my EV charger’s energy consumption. I had to replace it with a new integral helper a few days ago. I would like to merge the histories from the 2 helpers together so that I can retain the old data. Is there any way of doing this?

I had thought about downloading the history from both sensors as a CSV, concatinating them and re-uploading them. However, integral sensors are “total” instead of “total_increasing” so the reset back to 0 where they are concatinated will break things.

2

The way to do this is to change the entity_id from the new device to match the entity id of the old device. Then it will feed into the same integral helper.

3

I’m not sure if that is possible - the devices are all created through the UI, not with YAML.

4

It’s definitely possible, post your YAML and screen shots of the device.