I've changed all the interaction field names from "Interaction: " to "Interaction->" to stop them messing with the photo tag processing on photo import. When adding photos already tagged with fields to the "Add an observation" page, it was only grabbing the field name text after the colon and so not working properly.

Everything works now that the colon is gone, so long as you use a recognised taxon name. For example, if I tag a photo on my computer with "Interaction->Visited flower of=Rosmarinus officinalis" and upload it, it will get this field added with the taxon Rosmarinus officinalis.

That can save a lot of time if you''re maintaining your own photo library in your computer and tagging lots of photos there and uploading them all at once.