Shorter 8mm CV joint from set 42160

[SNIPE]

Hello; I have few questions: it's safe to submite a part that it is not been released yet?. Also, regarding to part 52730: I checked the Lego Builder App and it have a diferent number 46841 so: is this number an alias of these part, it's a totally diferent part, or is a wrong number on the app?
the info from the part reads: "Name": "CARDAN CUP W/ CROSS AXLE, NO. 2", curious isn't?

52760 is the correct part ID , this is the CV joint with a 3L axle, where as the part I'm talking about has a 2L axle and is light bluish gray rather than dark bluish gray, it came out in set 42160.

Google doesn't give any results for '46841'.

Yes, parts that are not yet released sometimes do get released on the unofficial parts library.