Hi,
I don't think so...
Offset coordinates are set "0".
It happens in every project, 2-5 times a day.
This did not happen in v.2016 and lower versions.
I associate it with the modification of bars: when lengthening bars, the program "lengthens" = "shifts" the bars, although it should not move the dots, especially those that are not the extended position, although they may be similar to it.

Thank you anyway

I draw in 2D: I create a 2D bar and unfold it in the view, then distribute the same bar in a cross section as dots. These elements are 2D (I know Allplan is 3D, but that's not the point). When I want to move the cross-section or just the dots in the drawing (these are just a few lines and bars drawn with dots), the bars are scattered over the entire area, e.g. by several dozen meters. The same thing happens when I want to copy them: the pasted element "falls apart" in the drawing. Or when I want make them new position number.

Do you draw in 2D or only in 3D? If only 3D, I don't think you have encountered this problem...

I use real reinforcement functions and make elements 2D (they are invisible in 3D, but Allplan counts reinforcement bars as usually.)
I see what You are trying to say to me...
Thank You, I have to try new ways while creating a new project.
Regards

The same drawing before and after a minor change (sometimes it is enough to move it, sometimes change the bar diameter, sometimes renumbering). Some of the rods go into space, they are moved and their descriptions are left in place. They are shifted by any distance, sometimes orthogonally, sometimes arbitrarily.

The description you are writing about is inactive when drawing 2D.

(For those who think I'm a layman: I have been drawing in Allplan since 2000, mostly 2D, sometimes 3D, and this is not the first time that such problems appear. The 2016-1-13 Allplan version is the best of all.)

Thank you for your support.