Leading Zeros being dropped

[cheid1977]

I am importing a file into Power BI that contains tracking numbers for a large number of shipments. Some of the tracking numbers  are all numbers and some contain letters.  When I import the file into BI it automatically converts the tracking number column to a numbers field. When I change it to text it won't change the field back to it's original state with the inclusion of the leading zeros.  How can I prevent the leading zeros from being dropped?  Thanks.

[tjd]

You might want to take a look at PQL's (Power Query Language/M) command Text.PadStart (https://msdn.microsoft.com/en-us/library/mt260573.aspx).