Static scheme change

[borgese99]

Good morning STKO team, I'm a beginner, sorry for every mistakes that I could have done. I have to carry out, on the same beam, two load tests (displacement control) with two different static schemes. The first configuration has the roller placed on the right side. In the first static scheme, the beam must have a loading and an unloading test. Subsequently, the roller moves to the lower part of the beam and a second load test (displacement control) is performed on the same beam. I made different attempts trying to modify the static schemes in the same model and to make the beam unloading analysis, but I couldn't solve it. I think that the problem could be due to the fact that interactions remain unload. I ask you if you could check the model and give me some advice on how to change the static schemes on the same model and how to unload the beam after the first analysis. I have attached my file and an image of tests here. Thanks a lot for your availability.
Pasquale