Currently, in Excel if I enter a zero "0" as a value, when I upload using Smart Import, it says it is successful but no value appears in the app. It is as though Board (Smart Import) doesn't know the difference between a null and zero! This is a very big pain for us where users often need to upload zero as a valid indicator actual. Currently we have to tell them a horrible workaround, to enter 0.0000001. That is not intuitive for users.
Please Board colleagues, fix this issue in the next Board update.