Is this a clue?

“But one must be careful of false friends when translating verbs between closely related languages. It is true that ge- is a past participle prefix (as it was in Old English), and that lost is the main part of the verb form. But luckily, in Dutch gelost does not mean “lost”. The sign was saying “All baggage is unloaded.” The los- bit should be thought of here as suggesting the root of the English verb and adjective loose (as in “set something loose”) rather than the verb lose (though as Björn Lindström pointed out in a comment after seeing the first version of this, the two are in fact distantly related to each other).”