I deployed these updates.
Sending error and feedback signals of DARM to NBDAMP seems to be working well as shown in Fig.1.

In this update, k1lsc, k1visetmxp, k1visetmyp, k1visitmxp, and k1visitmyp were restarted though SDF diffs remained on k1lsc (Fig.2) and k1visetmxp (Fig.3)

Diffs on k1lsc
I couldn't find any related post on klog a issue of k1lsc.
According to LSC_LOCK.py, FM3 of LSC-OMC_DC is not operated by guardian. So it was probably a manual change by someone. Important thing is this filter module affects an online calibration but now I have no way to check whether enabling or disabling FM3 of LSC-OMC_DC is nominal. If no one can confirm it, we had better to measure OLTF and compare with previous one after IFO recovering in order to keep online h(t).

Diffs on k1visetmxp
SDF diffs on k1visetmxp may be related to klog#32970.
SDF diffs say the feedback destination of NBDAMP_P2 is changed from BF_L to MN_P. I found above klog post as an only recent post related to ETMX_NBDAMP_P2. (I'm not sure it's really related or not.) According to above klog, P2 DAMP didn't work well at that time. So this difference might be no impact for IFO lock.