means, the ,v file was copied?
Of course. Just as ,v files have been renamed when a file should be renamed. In CVS, this is the only way do it without breaking annotate etc.
well in that case the complete history would have been copied and the content would appear double from the first checkin.
Which means you didn't detect it at all. In my svn import, the copy (with history) is properly represented at the appropriate time, and there are no double checkins.