Diff output to text file

Hi All,

When I write the diff command output(side by side format) to a file and viewed on the desktop using any text editor(say Notepad) the format of the output layout isn't the same as it should be, though "Wordwrap" option is disabled. Which means left and right records are not on same line. Please help me out on how to overcome this.

FILE1:

ISA|00|          |00|          |21|ABCD           |ZZ|DEFG           |150813|0643|U|00401|000002469|0|P|>~
GS|PD|ABCD|DEFG|20150813|06431488|2469|X|004010~
ST|852|0001~
ZA|BS|0|AA~
ZA|HL|0|AA~
ZA|LS|0|AA~
ZA|MS|0|AA~
ZA|Q1|0|AA~
ZA|Q2|0|AA~

FILE2:

ISA|00|          |00|          |21|ABCD           |ZZ|DEFG           |150813|0643|U|00401|000002469|0|P|>~
GS|PD|ABCD|DEFG|20150813|06431488|2469|X|004010~
ST|852|0001~
ZA|BS|0|EA~
ZA|HL|0|EA~
ZA|LS|0|EA~
ZA|MS|0|EA~
ZA|Q1|0|EA~
ZA|Q2|0|EA~
diff -y --width=220 FILE[1-2]  >> Testcompare.txt

Output viewed as:

ISA|00|          |00|          |21|ABCD            |ZZ|DEFG           |150813|0643|U|00401|000002469|0|P|>~
														ISA|00|          |00|          |21|ABCD            |ZZ|DEFG           |150813|0643|U|00401|000002469|0|P|>~
														
GS|PD|ABCD|DEGF|20150813|06431488|2469|X|004010~
														GS|PD|ABCD|DEFG|20150813|06431488|2469|X|004010~
														
ST|852|0001~
														ST|852|0001~														
														
ZA|BS|0|AA~
													     |	ZA|BS|0|EA~
														
ZA|HL|0|AA~
													     |	ZA|HL|0|EA~
														
ZA|LS|0|AA~
													     |	ZA|LS|0|EA~
														
ZA|MS|0|AA~
													     |	ZA|MS|0|EA~
														
ZA|Q1|0|AA~
													     |	ZA|Q1|0|EA~
														
ZA|Q2|0|AA~
													     |	ZA|Q2|0|EA~