@echo off
setlocal enabledelayedexpansion
set txtfile=test.xml
set newfile=new_test.xml
if exist "%newfile%" del /f /q "%newfile%"

for /L %%i in (1,1,5) DO (

	for /f "tokens=*" %%a in (%txtfile%) do (
		set newline=%%a

		set newline=!newline:%%i.png=!number!!
		echo !number!
		echo !newline! > %txtfile%
		echo !newline! > %newfile%
		echo %%i%
		echo !number!

	)
	set /a number=%%i+1

)