So im trying to add Fossil mod to DW20 pack, everything seems fine but when i break the fossil block instead of dropping mod items it drops backpacks. So then i tried to change block ids on fossil config file and at first it seemed fine as some of items dropped as it should , but then i got a backpack again. Then i checked the IDs dump file of NEI and i noticed that all ids i put in config were unused. Any1 have ideas what might be the problem?