Please post to the list, not to me.
I don't know about the older versions. If they were about
the time the read dump command was released, then there
may have been some initial changes and bug fixes.
I don't know what you mean by "atoms repositioned". Dump
file snapshots should be read in perfectly, for triclinic or orthogonal.
Note that as the dump doc page states, dump snapshots can
have atoms that are slightly outside a periodic box. When those
are read in, the atoms will be remapped back into the periodic box.
There are also round-off issues (unlike with binary restart files),
due to the box bounds and atom coords only having finite precision
in the dump file. If "repositioned" means something other
than those issues, in the current version, then post a more
specific question.
Steve