cmp.bash

#!/bin/bash
find -name *.txt | grep "[0-9]\{8\}-[0-9]\{6\}\.[0-9]\{3\}" | sed -n "s/\(^.*\)[0-9]\{8\}-[0-9]\{6\}\.[0-9]\{3\}-\(.*$\)/mv '&' '\1\2'/p" | sh
i=2
while (( $i<10 ))
do
  find -name "*\[0$i\].txt" | sed -n "s/\(^.*\)\[0$i\]\(\.txt$\)/cat '&' >> '\1\2' \&\& rm '&'/p" | sh
  let "i++"
done
find -name *.txt -print0| xargs -0 sed -i~ -f ./cmp.sed

cmp.sed

s,^#[0-9]\{6\} [0-9]\{4\}/[0-9]\{2\}/[0-9]\{2\} [0-9]\{2\}:[0-9]\{2\}:[0-9]\{2\}\.[0-9]\{3\} \(.*\)$,\1,p
s,#[0-9]\{4\}/#[0-9]\{4\},,p
s,([0-9][0-9]*),(),p