A straightforward reading of these verses would have the Nephites stay in the land Bountiful for four years after the war had ended in the twenty-second year (3 Nephi 5:7). This would not be the correct way to read these verses. Verses 2 and 3 repeat the basic information from 3 Nephi 5:4-6. What has happened in between is Mormon’s insertion of his own tasks and feelings. Those were an unplanned insertion into the text, and thus Mormon returns to his text with the process of repetitive resumption (see 1 Nephi 6-6, Part 1, for more on repetitive resumption).
When the war ended, the Nephites returned to their homelands, and then Mormon’s count of years (3 Nephi 5:7 and 3 Nephi 6:1) takes place. We return the events of the text to the correct time period in the next verse.