Absolute respect to uMod community, specially nivex for this mod, it will bring so much fun on my modded server that started losing hope.
If it ever becomes paid mod i will be among the 1st ones to buy it for whichever price it will cost.

This is really weird issue and i haven't seen anyone else posting this except 1 really short thread, so please read it carefully because it's important to see all the things i have tried to make this work.

I have been working on this mod past 3 days, 10-12 hours minimum a day without stopping.
I understand everything about it, learned every possibility of this mod.
I made 21 different bases, pasted most of them from Fortify, 5 bases for each difficulty with exception for nightmare mod, only 1 big a** base.
From those 30 hours of my hard work, atleast 20 of them went on heights.

I know already everything about copypaste mod, and that i can set it up there and then it should be ok.
But it's not happening.

I had to adjust height for each and every single base individually. But even that would be piece of cake, if it worked properly.

Example:

Im using Maintained events.
expertbase01 spawns (one of my Fortify bases and expertbase01 is my copypaste name) and it's under ground.
I go to Profiles/ExpertBases and there under the expertbase01 i adjust the height.
I come back, nothing happens literally, base still on same position. Autoheight is ofcourse on false so no problem there.
In some cases, adjusting height in difficulty profile works, most of cases gets ignored.

Then, i paste the same base with copypaste, i adjust height, looks perfect that moment, i reload RaidableBases, and that base is either too much up or too much down.

After losing 45 minutes, i managed to guess the right height in copypaste, in the way like; i pasted that base with -3 height, it went underground but when i reloaded RaidableBases it looked perfect there, while pasted with copy paste, it was half underground. Makes absolutely no sense.

Then next thing i tried was, i used /rbe command to manually spawn that same base with same height settings that Maintained events used (when it looked good in /paste), on the exact same location, and base spawned with height that i actually put in copypaste, other words it was perfect.

I just did this for test purposes, and it turns out that Maitained events is not spawning bases with proper height, even tho i swear to god i really tried every single possible thing to make this work, but i just can't.

In the very end i managed to do it and eventually my expert/medium/hard bases are ok now, after 20 hours of editing them and struggling with heights by guessing them so many times, unloading and reloading mod 300+ times but well, i did it.

Now, my easy bases used to be edited perfectly, but after realizing that i made easy bases way too hard, i needed to change some things like remove some traps etc.
They all got messed up again.
1 base keeps extremely frustrating me for exactly past 2 hours now.
Worst thing is, it's the base i build and not from Fortify (saying this because i know fortify bases can be screwed up sometimes).
The other worst thing is, that base was adjustable on the way how i explained before about that expert base, and i was doing it same like every other base and now i cannot bring it down anymore closer to ground.
Literally for past 2 hours, im trying to put height of that 2x2 simple base down, and i can't. Manual /rbe still works ofc, no problem with that, but that's not the point.
Im just cracking and breaking my head trying to figure out what is wrong or what am i doing wrong.
Because none of my methods that i used before, are not working now anymore.

Should i maybe use scheduled events, could that spawn bases same like manually using /rbe command?
Cause in that case i would just give up on maintained events, i feel extremely frustrated by this.

I came here to practically beg for help because i lost so many hours on 1 single problem, i've gave my soul to make this entertaining for players on my server and i wanna add so many more base designs in future. But i will not be able to do that if i keep having this problem and i will just have to stick with the bases that i did so far because im gonna get gray hairs soon from this xD

Thank you from heart for any answer that could help me or try to help me, and once again i am so much grateful on this mod.

Edit: Just tried with scheduled events, turned off Maintained ones, but still same result :(

have you tried reinstalling RaidableBases from default? just add one base on easy that you know is an underground base.  (ive never used maintained. only scheduled, but i imagine theyre the same..) only change what you must to get that base in the mix. see if it spawns ok, or underground.

if its underground then its not raidablebases, ive done the 100s of times thing as well, asnd im sure many others have, so i dont think its that simple.
if its ok then its something else, did you copy the base eye level with the foundation floor?

Heya thx for reply, luckily i figured out how to fix it super easy, but yea it took me 20+ hours to figure it out...

So basically, mod does not accept any base height changed while the bases are loaded already into the mod.

So example, my last hope to fix this was to use rb.config remove easybase01 02 03 04 05.
After that i /paste again all of those 5 easy bases with copypaste mod, i adjusted the heights and then i used

rb.config add and i added them back, and that was it... they are all perfect now.

Im so happy i fixed it because i was about to say f it, i will just manually spawn them, but thankfully i wont have to do it! :D

Ok, next time you have a problem base, just /paste base, /copy base at correct height, then 'o.reload RaidableBases'

Im a bit surprised that a reload is needed, but if it is, then you wont need to remove and add from config, just reload plugin. 

Yeah well, i wrote in 1st post that i was using reload all the time, but it was not accepting the new height.

I reloaded mod like 300+ times in total.

ive never had a problem, and im sure many people would be shouting if they had that happening too. 
300+ times doesnt matter if its done at the wrong time. /paste base, /copy base at correct height, then 'o.reload RaidableBases' is all thats needed.
if rb.config remove easybase01 02 03 04 05 .. add easy....   works for you then have at it.

Yeah most likely i was doing something wrong all way long.
Now im only copying buildings strictly from foundations and yea it seems ok, but i still have some minor issues, like height not working in profile base file for some of the bases. But all in all im happy beacause i have that 1 guaranteed thing that will fix them incase i screw something up again.
And big thx to you chef for helping me <3

Glad your on the right track :) thanks for letting me know. I cant think why some bases would be ignoring the height value. If its not too much bother i fully recommend having a localhost server with a small flat map. Helps a LOT with building bases and general testing etc. It would be easier to work out height issues too.

hi, thanks, glad you enjoy it, but i've already answered this question in another thread.

this is fixed in the next update

https://umod.org/community/raidable-bases/32739-spawning-mostly-underground?page=1#post-2