Artifacts and Research have caps as well, and yes you can lose resources on both if it gets near your cap and then you receive your hourly shipment.

It's set that way purposely so that you either have to gain more ranks(for research capacity), get more planets(for mineral and artifact capacity) or purchase GP Storage Items.

or you can harvest b4 you get your last shipment

i personally try to set mine up to where i harvest twice daily , once b4 work, once b4 bed...about 12 hours apart...admittedly, sometimes i do lose some production due to planet effects but usually, i harvest with some space to spare...its alot of trial and error to get it right though

I know artifacts and research have caps, but u can go over them by recieving shipment, by the hourly production, and the daily. But with minerals u can only go over it via the daily and the shipment, but u can't go over the cap by the hourly production. My suggestion was to allow u to go over the cap via the hourly production. And getting the GP storage items is only good for high ranks.

You cannot go over the artifact and research caps by the hourly shipment.

I lose over 10k artifacts every sunday because i get an extra hours sleep and when i wake up its capped at 180k artifacts dead on, no more no less. So it doesn't go past the caps.

If you could go past the cap via hourly production then whats the point in having set caps, as they would mean nothing if you could go past them via every method of gaining production.