Because this:

/;FTP*:*/
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...says match any line that has a ; followed by FT followed by P or not P followed up with a :. Essentially, you're being too greedy.

Try something like:

/;FTP.*?:.*/
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...which says match ;FTP anywhere in the line, followed by anything non-greedily (.*?) up until it finds a : (you have whitespace that the .*? registers), followed by anything, greedy.