Pasting completed tasks into the task list appends creation dates in front of the "x"

[mjdescy]

Steps to reproduce:

Copy task text below (including line breaks) and paste directly into the task list:

x 2016-08-01 task 1
x 2016-08-01 task 2
x 2016-08-01 task 3

Erroneous result

The newly added tasks will look like this (2016-08-09 is today's date):

2016-08-09 x 2016-08-01 task 1
2016-08-09 x 2016-08-01 task 2
2016-08-09 x 2016-08-01 task 3

Expected result

This is really a "better" result rather than an unexpected one. I don't think completion date or creation date of completed tasks pasted into the task list should be adjusted.

x 2016-08-01 task 1
x 2016-08-01 task 2
x 2016-08-01 task 3

[mjdescy]

Version 2.3.1 will close this issue.