• You are working with Firefox, from a computer running Windows
• You create a new metadata description, which contains a selection list.
• You want to import a list that contains more than 50 names :

The import seems to work (you can check in the database, the metadata description contains your information), but you don’t see the form anymore, only the general information is displayed.

This is a Firefox bug in Windows environments (it works very well with Ubuntu). The metadata template modification form is generated by the browser (and not by the server as other forms are), and Firefox reaches its limits: if you activate the Ctrl Shift I mode, you will get a message indicating too many loops.

On the other hand, your form works perfectly well when entering metadata from the sample modification page.

Workaround: use another browser based on the Chrome engine (Chrome, Chromium, Iridium, Vivaldi…).