Welcome on the project Nah'dneb.
There are some know problems with importing Ahra Pahts, I'm not sure why that is; but exporting works fine though, don't worry. However since the importing won't work fine if you try to export the Age with the files you have just imported it will not work.. Also I'm not sure what you mean by the "all the streetside posts in shell 204". There isn't anything special in 204.
If you need to reinstall the Age, make sure you delete all the Pahts files in your /dat folder before reinstalling the ones you downloaded.
If you want to export your Shells you will need to do a couple things. I suggest you read the City Rules document as it contains important info. (You can also find a .doc version here). I'm sending you a PM with the link to your Shell.
At any rate, your shell looks interesting and it definitely fits the theme of the red district.
Marein: I'm not sure what I did because the shell has been prepared and put online the day you asked it. I'll send you the link again.