As they are mislabeled,
The jar which contain mixed label doesn't have mixed jelly's, hence take out a jelly from that jar, if it is orange jelly then stick orange tag on it.
On orange tag jar, stick apple tag(because apple tag jar should not contain only apple jelly's)
On apple tag jar, stick Apple and orange tag.
If the picked jelly is apple then answer is apple -> orange tag orange -> apple&orange, and apple&orange -> apple tag.