You can shorten that to: 
s#(\([^)]+\))#{$_=$1;s/;/,/g;$_}#eg

[download]
(not a huge difference, but I've had no coffee today...)
update:Fixed to add g modifier to end (see turnstep's post below)

In reply to Re: Search and Replace by infoninja
in thread Search and Replace by Anonymous Monk

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