More validation on data input that is equivalent to checking in to KE

[#1]

Duplicate objects not picked up until check-in. Duplicate items can be accidently created when  importing data (eg using the translator to import multiple objects from excel).  Although it lets you have those duplicate items there - when you try to check them into KE the Check in will not occur and it is difficult to find out why. 

The validation of duplicates should be at a point before checkin.  Either duplicates should be allowed, or duplicates should be picked up by the translator import.  Alternatively there should be a nice way to consolidate duplicate items. 

Sometimes when duplicate items are imported it will only take the first and the rest are not retained - in this case there again is no warning that this data is being deleted.  Perhaps there should be a warning, an option for consolidation or the option to add a suffix to the end of the duplicates (as in when merging databases). 

What ever the solution more validation is required when using the translator or other input methods that should be equivalent to the validation required for check-in to KE