When I pre-compose a bunch of layers they get repositioned? same when I copy and paste?

1. When I pre-compose a bunch of layers(Objects) they get sent to offscreen. Pre-composition isn't supposed to change anything. (for layer object linked to a null object)

2. The same thing happens when I copy and paste. It gets sent off screen as opposed to duplicate which keeps the position. (for layer objects linked to a null object)

3. I suspect it may have to deal with null objects. I have the original layers object parent/linked to one null layer. I use that null object layer to move all the layer objects in unison. Then I want to pre-compose all the original layers for futher effects and then parent and linked then it.

Do I have to un-link the layers then pre compose them? I can't do that because I laready set motion position via null object layers  and unlinking it would screw it all up. 

4. So I tested it again with a new project file and no problems linking files to null object  layers and then precomposing them. They keep thier position also copy and paste keeps thier position. no porblems with copy and paste when linked to null objects. So maybe there is a setting I accidentaly turned on? The guide layers button isnt turned on so it can't be that.

5. I have a fix around it where I re-position the layers in the pre-composition back to where original were in the original comp but its time consumming and sometimes hard to get accurate.