The axes on the idea chart is a special field that cannot be edited on the idea details but only changed through dragging the idea on the chart (it can also be viewed in a list column but no edit functionality there). Although Aha! allows for different fields to be used for these x and y axes for value, effort, and risk, there is no provision to enter the data manually or in bulk using import.
The ability to select a custom field for the x and/or y axis could help enter the amounts from other sources and speed up the charting process. Adjustments can be done on the chart afterwards.
Thank you for the idea. The options included for the x and y axis in the ideas chart are driven by the metrics used in the ideas scorecard. You can customize the options by creating a custom scorecard. There is an existing idea for the ability to import scorecard metric values from a CSV so we are merging this idea with that one as the core request is the same.