Loss of translation when copying (cloning) entities (multilingual)

In a multilingual installation, copying/cloning of entities (like events) always result in a loss of the non-primary language. For example, cloning a translated event in a English/French installation will result in having all the french fields getting the english value of the original field.

It is particularly annoying when there are a lot of fields to (re)translate, i.e. :

• profile
• events

Also, not really a cloning but adding a translated custom field to a profile gives the same result.