masking out certain blocks, stamp brush+blueprints

[primal roost]

Does anyone know how I can stop a certain block from being placed when I'm using a stamp brush for pasting in blueprints?
For example: I want everything of the blueprint to paste except white wool.

[next jacinth]

not possible

[primal roost]

Is there an alternative?

which does not mean me recopying my schematics without that block