I don't know for sure, but I believe the "Where to Buy" section is auto generated - or it is an admin function (only). Normally it takes a day or two to crawl or get updated on links for that. If I'm wrong I'm sure I will get corrected /grin.
The external links are normally not deleted unless they are not relevant (spam) and such. I do external links to sites where you can get really good prices, or find hard to find items all the time.
If you have a store may I suggest you update your profile to include the link in your profile page; that will/may help, and try adding the external links again (if direct product links will not work, you will just have to use the homepage for the store).
Lastly, odd hours by odd people -- IE: responses can be slow at times on boards like this, you were not being ignored - and if I said something that is incorrect, or did not explain well enough I'm sure someone will correct me. (I'm here this morning as I needed to kill some time and was tired of Solitare!! heh)
See just as soon as I respond Erik wakes up and gets online heh