3DSearch Export - Date Format Problems

 

I'm exporting a 3DSearch result to a CSV file. Here's my first 5 rows of the Modification Date column, in 3DX:

And here's the same first 5 rows in the CSV export:

You can see the first two dates (both with the day less than 12, ie 9th and 3rd) have had the PM removed after the timestamp. Strangely, they've also had an extra space added between the date and time. Whereas the following 3 dates (all the day more than 12, ie 21st, 23rd, 20th) have come through with the same format as in 3DX.

Anyone seen this before? Is it something 3DX is doing during the export process, or something Excel is doing when opening the file? It makes sorting by date impossible!