Are these new devices or were they working in OH3 on another Z-stick? Also don’t have the device(s) so do not know what is meant by general node and test node? Are they both FGSD-002’s? A general reference for unknown devices Guidance for “unknown” Zwave Device - Tutorials & Examples / Solutions - openHAB Community.
My guess from the limited information provided is to wake the device (see last paragraph in reference). The devices have been around awhile, unless there is a new TYPE:ID, you won’t have to mess with the ZW DB.