Thanks for the suggestion, Bruno.
There is already a setting to copy the reading to the batch readings. The screenshot below is from editing the recipe action:
This wouldn’t make it the OG in itself, which I agree with you, would be useful, but it’s probably a helpful time-saver that you can take advantage of today.
The good news is that what you’re asking for will be implemented as part of Calculated ABV on merged batches & OG on multi-turn batches and that request is very much on our radar. If you can vote for that other thread, that would be great. I’ll close this one to keep all votes in one place. Thank you.