Data not showing up in Observation Field

I have a recurring problem with the “Host Plant ID” field in the Leafminers of North America project I created. I enter the host plant ID when I upload a photo, but then when I view the observation the field is blank and I have to reenter the host plant ID to get it to stick. I’m not the only one having this problem; see this post for example: https://www.inaturalist.org/observations/32181469

In this post (https://www.inaturalist.org/observations/32185187), Jason Dombroskie attributes the problem to weak cell phone reception, but my posts are all from my home computer so that’s not the (only) problem.

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When you say “Data not showing up in Observation Field” and “when I view the observation the field is blank” – do you mean that the observation field is present but without an ID entered? Or no observation field is displayed at all?

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I suspect what happens is that the app sets the field contents to the descriptive text name of the taxon, but it is a taxon field which normally stores a number - the taxon’s database entry number (eg “48086” for Leaf-miner Flies https://www.inaturalist.org/taxa/48086-Agromyzidae). So on some pages, or when you go to edit the field it shows as blank (as the field is defined as only allowing taxon numbers). In other places you see the text contents, but it isn’t linked to a taxon.

On “The Chase” (a UK based quiz show) last night they had the question of what makes leaf mines, multi choice with the right answer given as “caterpillars”… I would have been stumped from thinking they could also be flies (not an option given), but then noticed that the only invertebrate option was caterpillars!

The observation field is present but with nothing entered.

I’m not sure I understand your explanation of the problem, or what the solution would be, but I have noticed that sometimes when there is something in that field, it is just the plant’s common name, and without a link I can click on to find out what species is being referred to (here is an example: https://www.inaturalist.org/observations/32660360).