Transit's help file says:
6.8.5 Translating two segments as one sentence
You can write the translation for two segments in a single segment. However, if you use this translation as reference material at a later stage, the reference material will not be correct. During the next translation of one of the two sentences, Transit will suggest either an empty sentence or two sentences as the translation.
However, if you cannot avoid this, write the text in one of the two segments. If necessary, move all of the tags into the one segment for the appropriate words and leave the other segment empty.