I have some questions on how a Custom Order ( or just a temporary listing in general ) is intended to work.A) After a customer has ordered a Custom Order and received it, are there any drawbacks to removing that listing entirely from the profile as for example losing feedback from that specific listing or should it be left alone with 0 quantity as a listing?B) Are there any rules at all as to what would qualify for a Custom Order? Basically are there no limits on how many Custom Orders can be posted at any one time?C) Is there any problem with creating a separate shipping option for a Custom Order only meant for that specific order as it may for example weigh a lot more etc. ?D) If someone else than the original recipient orders a Custom Listing not intended for them, is it fine to just cancel that order and tell them it was for someone else without any trouble?If there's anything relevant which is unique to Custom Orders that I've forgotten to ask which someone knows please post whoever sees this. :)