I cannot be certain what is going on based solely on the pictures (a sample file would be more informative). Based on what your description, the "date" axis version looks normal for a line chart with a date axis, and the "text" axis version looks normal for a text axis when the category axis range includes several blank entries towards the end of the range. Is that the case here -- you have included several "empty" cells in the chart's source range?
If that is the case, and I understand what you want to do, you need to remove those blank/empty/unwanted cells from the chart's source ranges. In these cases, the first strategy suggested is to use "dynamic named ranges". This is an old and frequently discussed technique, so I will defer to others who have written about it:
http://www.excel-easy.com/examples/d...med-range.html
http://peltiertech.com/dynamic-charts/
Or put "dynamic named ranges" into your favorite internet search engine.
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