Brent Berwick hmerouanegm ATKai - yes, just as JeremyTBradshaw mentioned (thank you!) - the script does not do any evaluation of property value for you. It will simply log an entry if the value is populated by anything. There could be various reasons why the value is populated and this is totally valid. We have heard of this being the case on older mail items more than on recent (possibly this functionality was more popular in the past, or add-ins using it were more popular or ??) But the bottom line is - if you get a list and you do not see the property pointing to some strange / unrecognizable server / path - then you are OK and you do not need to clear the property or the item. The evaluation of what is "strange / unrecognizable" is left to you, though, as what is strange for your organization might not be strange for some other.
ceantuco I'm sorry I do not have any immediate advice for you on this; I do not understand the issue really (it does not seem like it is related to SU specifically). Please open a support ticket with us if you need help with digging into this.