Macro editing fails in a strange way

[stiff]

Hello,

I often like to record quite complicated macros, especially ones with
moving between two windows, one window can for example contain lines I
search for in the second window, where on each occurence I do some
modifications. This is one of the most useful applications of macros I
know, so I would expect other people doing it too. Recently, I found
out that one can edit the macros after defining them, but strangely it
doesn't seem to work correctly for me. If I do C-x C-k C-e, do a
simple modification to such a macro (ie. before I had an insertion of
'foobar' after the occurence and I change it to inserting 'barfoo'
after each occurance) and than save it with C-c C-c parts of the macro
disappear completly and in effect the macro most often simply doesn't
do anything. Does anyone have an idea why something like this may
happen, am I doing something wrong, or is it just a bug? I'm using
emacs 23 from CVS.

Cheers,
Jarek