Defining region extraction template
If the regular region grid is applicable to multiple scans, we may set one of the images with the desired region definition as a template. To do this, select the Set image as region template in the Images context menu, this will mark the image with a light blue/cyan color.

The Location in Feature extraction panel can then be set to Fixed by template regions.

The same set of regions from the template image is then used when exporting data. Note that only one template can be selected in a project.