Hello there; With the 8.504, when I used gusset or butt gusset joints to attach steel beams to reinforced concrete shears or columns, I did not encounter any problems with bolts not forming. There may be a problem in your model, but if your job is urgent, take the steel drawings and check them. If bolt holes are visible on the steel beams and plates, it will not be a problem for your project. Only the image you see on the screen is wrong. However, I will ask you to send your project under any circumstances. Good work.