Incomplete nutrition information

[mtbc]

For me a pleasant easy dessert is canned fruit. I do not have much of a sweet tooth so I prefer the fruit to be in juice rather than syrup. Asda sell some canned fruit cheaply but the labeling of their own-brand cans is annoying: they tend to give nutrition information only for the drained contents. I do not know why I would be expected to buy the fruit in juice then pour the juice away down the sink. Is that what people normally do or is it just a cheap tactic to make the numbers smaller? I submitted a comment through their website about this and heard nothing back.