Hi Nexela,
when I do an update to a blueprint that has therax's "Beltlayer" underground belts (https://mods.factorio.com/mod/beltlayer), the underground belts are not part of the upgraded BP.
When I do a "new" BP, the underground belts are in it.
Is that something related to the "black magic" mentioned by therax or can you, please, take a look at it?
Thanks.
EDIT: Sorry, please forget this one. It's even better to have them separate.
