Yes, it is absolutely normal & the installation method was correct if you are unsure about that. It just doesn't matter in the context of your question.
First you need to understand how the unsealer works:
Lets talk about an uncensored character class, e.g. the Medic. At first there are the default underwear textures. If you equip an unsealer, your medic character model will be replaced with an unsealed one, that has a special material (set of textures, you mentioned one whole set for the Sentinel) assigned to it and some additional polygons in the breast area, displaying a high resolution nipple.
Because our Sentinel got censored, these additional polygons are missing in our unsealed version of the character model. Thus we are missing out on a high resolution nipple and you only see the washed, low resolution one from the base texture.
It is technically correct, that my mod isn't a complete-full-100%-de-censor mod. Some compromises had to be made, because i have yet to be provided with the files i requested in this thread:
Link ->
http://gamevixenzone.undertow.club/requests-22/current-korean-queens-blade-files-756/#post12463
As long this doesn't happen my hands are tied.
TL;DR - Yes, you did everything well and the mod works as expected. I just can't fix mesh based censorship at the moment because i haven't received korean meshes yet and do not want to mess with the proprietary mesh format. (Request ->
http://gamevixenzone.undertow.club/requests-22/current-korean-queens-blade-files-756/#post12463)