Nothing has changed here.
If you set a category to say an ad type say business which is template set 4 then we will load the templates which end in 4 for editproduct,showcat,showproduct and uploadproduct.
Things have operated the same way for along time.
The only difference between your old version and the new version would be you can create a new ad type based off an existing type where as before you had to make a new set by hand.
I really do not understand you you expect to show me with a screenshot. It doesnt show anything wrong.
You need to explicitly show live examples via a url and exlicitly say exactly what is wrong. We do have accommodation services market etc. The template types in our default application are for sale,wanted,personals,help wanted and business.
Take note if you altered your old stock templates from some older version and then you upgraded and your using the default stock templates in our app. The only real differences between ad types is for sale, personals and business allow images and wanted and help wanted do not. for sale has some other selling fields and auction stuff.
Different wording for fields is handled like it always has been though overriding language phrases in the sub language files for the ad type in your languages directory.