Expected Behavior

9 amber from thaumcraft should turn into amber block from thaumcraft , because Biomes o plenty
amber block doesnt work with arcane lamp recipe.

Current Behavior

Amber turns into Amberblock from Biomes o plenty

Possible Solution

change recipe? ore dictionare thaumcraft recipes with BoP?

This should be fixed in 1.5.3 coming out later today.

This is still an issue in 1.6.0 on SMP: Thaumcraft amber blocks are not craftable, 9 amber from thaumcraft craft into 1 BoP amber block.