The European XFEL has taken 2017 three SASE lines successfully into operation. One of them (SASE3) is foreseen for soft X-ray radiation and two of them for hard X-rays (SASE1, SASE2). But all three SASE lines deliver only linear polarized light, which limits the research fields. In case of the soft X-ray radiation range the number of light polarization modes can be only extended by helical undulators. This is the reason why the SASE3 line was successfully upgraded in the winter shutdown 2021/2022 with four additional helical undulators. They were build at the Daetwyler company using the helical undulator design of the PSI and tuned at XFEL. During the first commissioning these devices showed the expected features. Light polarisation modes like the circular ones could be observed. But several times after the first commissioning the gap and shift positioning systems showed no response. They were damaged due to the increased radiation in the section and had to be exchanged. The calibration of the new gap and shift positioning systems is done with magnetic measurements. Magnetic measurements are also used to check the radiation influence on the magnetic structure. This poster presents the measured results.