I was logging it and was having trouble differentiating between each security thread type.
+1 I have trouble too so I'm not sure whether my reply will help (or not).
Check this link from the BNM to get a visual on these minor variations. I cannot see the difference on my notes so I just ignore the designation. Certifiers have yet to acknowledge the various printer's codes (which are found in various regions & are much easier to see), let alone these minor differences in the security strips.
Another site I have found helpful to get more info on the Euro is EuroBillTracker