Factorio Forums

Ok so all out of sudden my BP library deleted a lot of BP in my books.

I am able to reproduce this on my PC anytime.

So whats happening..
I open savefile "1" i have BP book with 82 BPs in it i save it to library. In here it looks ok I load savefile "2" and Book suddenly have only 2 BPs in it. And all my other (30) books where affected and "cleansed" as well

I know this is moded gameplay, but none of my mods (list in attachment) "should" affect library. And everything was fine and dandy till this morning, and i didnt do any mod/game update in betwen. Did i hitted maximum of library ? ot something ?

I tryed to diable all mods, but than my BPs disappered even from in game BP book probably cos they included removed entities.

Thanks for the report however without a save file, "blueprint library.dat" file, log file and a way to reproduce the problem there's not much we can do.

This is happening because in your blueprint library there are other books that contain the exact same blueprint. Every blueprint that is twice in there gets deleted from the new blueprint book that you put in there.
In your savfefile "1" you have the blueprintbook saved in your current game as an item, so this book isn't affected. But in the library it is checked after each load I think and then the duplicated blueprints are gone.

So if you want to have multiple or older versions for your TAFK or whatever you're doing now, well, you can't do that anymore because of this new feature introduced in 15.28. Great, right?

viewtopic.php?f=3&t=50632#p294686

Fixed that blueprints could be duplicated when moving to a new version. (48977)

I had the same problem.

Oh cool thx for reply, to be fair i was lazy to continue investigate this cos i just used workaround with copying strings betwen saves

Atleast i know its not a bug but feature and i doenst have to worry about it.