Sea-connected zone not transferring items back to capital

[Zap00]

I'm trying out the new addon and got a start on a metal-deprived peninsula. Managed to pacify a small islet with some ruins. Got a zone founded after waiting for a makeshift port card to generate and a had a recycler built, but the items generated by it aren't being moved back home.

Transfer of items into the island zone works, as the units there are being supplied and the recycler got built just fine. What it produces is just accumulating in the island zone inventory and does not get sent back, and I don't know why. The civilian population of the new zone is super starving right now, but the workers aren't. I haven't nationalized/upgraded the makeshift port yet.

Logistics points are available, neither zone inventory orders block the transfer/receipt of metal, the SHQ is not hitting limits.

What am I missing?

Screenies attached

[Zap00]

Found the button. You need to specially enable "Zone Pickup by Sea" in the SHQ unit admin, a submenu in one of the sidebars on the right.

That's pretty hidden. Now, at turn 50, my empire has it's first metal income outside of scavenging its starting hex! hooray!