You can only preview Campaigns, Ad Groups and Combined Keywords derived from the first 5 rows of your imported Keywords & Data CSV and Stem Keywords in Step 2 Campaigns and Ad Groups screen.
To keep Keyword Machine running smoothly in your web browser, we only load a subset of your data into the preview. You should get a good understanding of your Campaigns and Ad Groups structure, along with how your keyword lists are grouped using the first 5 rows of your imported CSV.
Please note that 5 rows from CSV does not necessarily equal the first 5 Campaigns or first 5 Ad Groups or first 5 Keywords previewed. The number of Campaigns, Ad Groups and Keywords previewed depends on your Keyword Batch settings and how you’ve grouped campaigns and ad groups with tokens.