These ASX tech stocks have lost billions. Buy the dip or stay away?

It has been a brutal year for these two ASX tech stocks who have lost more than half of their market value over the past year. 

Two of the ASX’s former market darlings — WiseTech Global Ltd (ASX: WTC) and Xero Ltd (ASX: XRO) — have endured savage share price declines.

At the…