Load/Dump cycle -> different dump files

I did some consistency tests on my repository, but I'm surprised by
the following result. I thought that the dump files of a same format
associated to a repository were necessarily identical, but this is
not the case. Is it normal?

I have a repository from which I generated a first dump file using
"svnadmin dump --incremental". I generated a second dump file using
"svnadmin dump --incremental --deltas", from which I loaded a second
repository with "svnadmin load --force-uuid". From it, I generated a
third dump file using "svnadmin dump --incremental". This third dump
file contains a few differences with the first one.

The differences (I haven't checked all of them) correspond to files
I moved with "svn move". In the copy part, lines like the following
ones are removed:

< Prop-content-length: 40
< Content-length: 40
<
< K 12
< svn:keywords
< V 7
< Id Date
< PROPS-END

This doesn't seem to be a problem since these keywords had already
been defined in the source revision. But I wonder if this behavior
is expected.

-- 
Vincent Lefèvre <vincent_at_vinc17.org> - Web: <http://www.vinc17.org/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.org/blog/>
Work: CR INRIA - computer arithmetic / SPACES project at LORIA
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