Trying to Import from .CSV, can't add to subdecks

I’m failing to import into ankidroid subdecks from a .CSV. I have defined several subdecks by hand. I have a headings on columns, and one column has a Deck heading. A typical entry looks like “TCC Classic::Must Learn”, with the quotation marks. The problem is that in the ankidroid importing tool, the Deck column is always mapped to Tags. How do I get this .CSV into subdecks?

‘Debug Info’ (Settings > About > ‘Copy debug info’)

Did you follow the instructions here and added a deck column header?

Now it knows the Deck column – see Imgur https://imgur.com/a/IPWYKOq. However, still nothing is being placed in those subdecks. The syntax looks right, no? If anyone has quick suggestions I’d appreciate them, meanwhile I’ll try to figure it out.

Got it. No quotes around deck specification. Thanks.