I have a question according to the rulebook "discard the tile onto a face-up resource tile to gain from the general supply the number of Thread/or Lace markers depicted in the lower half of tile"
What I understand is after you took the tile for Thread/Lace (not the silk) the tile won't be thrown away from the game but go back to be ready for replenish for tile as a face-up stack then, How can I randomize to it back to game as I have already know what that tile gives?
And the following question due to this situation is "Do I need to replenish the warehouse with face-up stack first and then randomize the rest from face-down stack?
The wording you quoted is that a translation or the English rules?
It reads like a badly worded way if saying discard the tile to a face up discard pile. You only replenish the face down tiles if they run out.
Personally I just draw the tiles out of a bag. Used tiles are discarded out the game. If the bag runs out of tiles, then I put the discarded tiles in the bag.