If you perform a concordance search and submit a translation immediately after, the search term gets carried over and is used as an input for Machinery when the next string opens.
Bug 1697583 Comment 0 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
If you perform a concordance search and submit a translation immediately after, the previous source string (the one that was just translated) gets used as an input for Machinery when the next string opens.