Placement big houses on Lots issue

@LadyDarkSorrow Did you try entering the lot you will be placing in in edit mode, enabling the Move Objects cheat (even if it was enabled previously), then placing from there without leaving the lot? Whether the particular objects were placed with MOO, it's possible other placements of objects via MOO, alt placement, , enlarged objects, or debug objects may be affecting some objects. Also, I'm assuming this is not the case, but just so it's mentioned, none of these objects are from packs you don't own, have custom content, etc, correct? Do you have Mods/CC, or did you in the past?

Also, I think I have noticed in the past that even with MOO active when I place, it doesn't always buffer the 'jar' for some items - not 100% of the time? Plus, just for fun, sometimes when one item deletes it takes another item(s), household build items, etc., with it.. as if they are somehow mysteriously linked - even from across a room or in a different room. Super annoying, but I've had it happen.

@SheriGR 

No, I have not tried turning on MoveObject before placing lot. I should try that out. (most sim player don't normally turn that on to place lots to play)

yes, I have notice hammering wall oddly removes, doors, stairs, chairs on the opposite side top floor of the house (not this one I make sure of that)

I own ever pack ESG from Sim 1-4 cd/dvd and Origin base) and all collectable (Big Supporter of Maxis 20 plus years Simmer) No Game Mods/CC   

well, 1. MCCC (story progression is stale without it)

but oddly, if I build a new house on lets say, Ward Den lot, back it up to gallery then replace the lot from Gallery  99% of objects in that house are place

if I take that same Newly place Gallery house place it, lets say  Newcrest Twin Oracle point lot, about 25% those items are missing when the house is place.

either The Gallery is messing up or the lots are. all I know something is

I don't want to share a 3 week build to have missing objects on downloaders 

@LadyDarkSorrow Unfortunately many players don't think to mention the use of MOO while building, or the suggestion to have it active while placing. Additionally many do not placement test it. I can't blame them entirely since sometimes placement and play testing take days for me, since I use MOO/alt-placement/debug items/enlarge for some aspects now.... and I placement and play test until all will place properly with MOO off, which means many tweaks and having to give up some things I originally wanted.

It may be helpful for you to test in a new save without the MOD, and also with the cache file removed, just to make sure if this is affecting anything:

If you would like to share it to the gallery for testing purposes I'd be happy to try placing in my game with and without MOO active:

@SheriGR 

okay. I tested this With Moveobject On and somewhat works, it still removing pillar place on or next to platforms and some stairs

so its kind of a work around. but, this shouldn't be the new norm still needs to be looked it to

pillar, windows, and windows covering, don't play well with platforms I have notice

@LadyDarkSorrow I'm glad it helps at least. I have not been building as much recently except to test until the last couple of weeks. I've loosely noticed that some things seem to be less fidgety to place, though the jury's out on if that makes a difference since I haven't yet done my placement testing with MOO off.

But...There are a couple of pillars that seemed to have spontaneously disappeared when I re-enter the lot or the room (not sure since I've only peripherally noticed this)? ... and curtains are driving me nuts. You may want to 'Me Too' this post if the same aspects of curtain placement is what you're referring to:
https://answers.ea.com/t5/Bug-Reports/OPEN-Curtains-are-snapping-to-the-outside-of-windows-instead-of/m-p/10405754#M185174

If you test and narrow down an issue you are noticing with pillars I would be interested to hear what it is. If you can find a context in which it happens consistently maybe a bug report would be in order (unless one's in place that I didn't see yet).

@SheriGR 

I don't normally build big Mansion style houses and I rarely run into these issue or the level of detail went into this build . so dropping a small house with few things would not see any or  maybe 1 missing items. yesterday I tested this

only 3 items went missing use Moveobjects when placing this Mansion, Pillar, and Both main stairs. this was a pain in the backside trying to replace.

I just hope Sim Team see this and look into fixing this

SheriGR thanks for hearing me out

@LadyDarkSorrow It is possible that even with MOO on if the items added, exact placement of said items, or some other factor has come to conflict with either a new 'rule' in the game's code that came with a new functionality at some point (example - platforms) or is manifesting a buggy conflict (new or old).

For example, I have a build that functioned and placed properly when I made it with a small half-wall beneath the outer area of the underside... but at one point there was an update to the game that no longer allowed for any type of half wall under a stairway - even with MOO on. So, when I placed the lot it would delete the stairway, even though it did not previously, even with MOO off.

Anyway, I was and am certainly happy to have been of any help I can manage, and I'm glad you shared, though I may not have fully understood all you needed. I appreciate your patience with me trying my best to do so. 🙌

You are certainly welcome to create and add your details to a Bug Report to see if others are seeing the issues, and perhaps for testing:
 https://answers.ea.com/t5/Bug-Reports/bd-p/The-Sims-4-Bugs