After accidentally overwriting objects (while importing them as text) one too many times, I decided to create an Import Worksheet for text imports. In this initial version, the comparison logic is a bit simpler than C/SIDE's Import Worksheet: if the object already exists, the default action will be set to Skip (as opposed to Replace), leaving it to the user to make a smart and well-informed decision about whether to overwrite (Replace) or not.
In addition, you can export (a selection of) individual objects from the Import Worksheet.
I'm assuming standard "Danish" formats for dates and times in the object properties.
Please be careful when importing objects. I'm afraid I cannot be held responsible if, by your own fault or my tool's, an object gets overwritten unintendedly.
Note: Because of the use of the C/AL statement IMPORTOBJECTS, you need NAV 2009 SP1 to run this object.