Having Work Item in Key-IDs format when exporting in excel

Hello everyone,

I am currently working on a Excel template and I wanted to replace ${item.subjects} whose format is [Key-Id] - Name.

Some issues appear when I import back the file and I want to avoid them.

I wanted to export my upstream fields in a format : [Key-Id] format.

(The format is the same as the one added when Work Item Key-IDs Setting in a tracker.)

Do you know if there is a command like item.id or another way to create this format ? It seems easy but I did not find any documention mentioning a list of command available for default fields.

Thanks for your time 

Current view	Expected view