Modifying nbt data outside of ForgeData subset via procedures

Hello! I need to change the nbt data of a vanilla block, but whenever I modify the nbt through the procedure system, it puts it in ForgeData.

The procedure that does this is being called on by a block, so running /blockdata is not an option.

Example nbt structure:

{ForgeData:{where my nbt data really is},where my nbt data is supposed to be}