Hello,
I have tried a bar chart and a line chart with the same data file, an EXCEL sheet (attached).
I was trying to sort the dimension according to the original file load order. I have seen that the sorting behaviour is different in line chart and bar chart.
1. I have selected 'Sorting'-> 'Custom' for both dimension and measure.
2. I have deselected any of the proposed sorting (alphabetically, numerically), until I see the indication "currently sorting on load order"
The result is different for bar chart and line chart. Line chart correctly reproduces load order (I 2008, II 2008, III 2008, IV 2008, I 2009...). Bar chart is incorrect.