Recipe for Underground Belt MK1 length 30 and 50 are missing

[Gootzi]

[bradzoob]

Just a calibration post; I've just played it this evening and had no issue with these recipes, fresh computer so fresh install of latest Factorio and only the 5Dim mods that were updated in last 2 weeks. Oh + a black market 2 mod. There does seem to be some double up of recipes though, vanilla accumulators and 5Dim as separate accumulators to research for example, check your research tree again perhaps it's a different path, for reference the vanilla accumulators just looks like the normal factorio graphic but all the 5Dims are yellow for some weird reason they're using saturated/colourized graphics blech :P

[Gootzi]

They are shown as unlocked with the first Logistics upgrade

so it's probably because I started the save without mods, but added the mod later

[Gootzi]

It did say it was porting or something, and my long inserters got converted to Inserter MK3, so it probably just didnt port the belt recipe