use strict;
use warnings;

while (<DATA>) {
    chomp;
    my ($dir, $crap) = split ' ', $_, 2;
    printf "%s\n", $dir eq 'INVALID' ? $dir.' '.$crap : $crap;
}

__DATA__
/base-dir/dir/foo.txt INVALID ORDER-NO 4546090
/base-dir/dir/foo.txt INVALID ORDER-NO 4546090
INVALID ORDER-NO 4546090
INVALID ORDER-NO 4546090
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