Is there a way to capture in an issue report the original planned completion date of an issue?

I would like to make a column in an issue report that depicts the original planned completion date for the issue.

Since that date can be changed along the way I am looking to have a column that shows the original planned completion date (un-editable) and a column that shows the current planned completion date (inline editable).

The only other option I can think of is to add a need by date on the custom form. Then add that need by date as the original requested completion date on the report and use the planned completion date column to compare.

Any ideas?