In the following table:

| [2016-07-03 Sun]--[2016-07-04 Mon] | 1d | d   |
| [2016-07-03 Sun]--[2016-07-05 Tue] | 2d | 2 d |
#+TBLFM: $3=$2

The second column is computed by pressing C-u C-c C-y. This sequence
calculates the time difference between the time-stamps in the previous
column and inserts the difference in the current column. This is fine.

Now, for the third column, I insert the formula listed at the bottom of
the table. Once applied, the result of the formula for the fist row is
just "d" instead of "1d". So, it seems that the value is not copied
correctly.

This seems to work fine if the time-stamp range is greater than one
day. Also, for the second row, the value is copied correctly but there
is an extra " " inserted between the number and the "d" letter. This
might not be desirable.

Appending "D" at the end of the formula, yields the same result:

| [2016-07-03 Sun]--[2016-07-04 Mon] | 1d | d   |
| [2016-07-03 Sun]--[2016-07-05 Tue] | 2d | 2 d |
#+TBLFM: $3=$2;D

I also tried appending "T" at the end of the formula:

| [2016-07-03 Sun]--[2016-07-04 Mon] | 1d | 00:00:01 |
| [2016-07-03 Sun]--[2016-07-05 Tue] | 2d | 00:00:02 |
#+TBLFM: $3=$2;T

The numeric value is copied correctly but the days are now changed to
seconds.

I attached a dribble file which allows you to reproduce the first row in
the first table.

<#part type="application/octet-stream" filename="~/org-copy-bug.dribble"
disposition=attachment>
<#/part>



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