free shipping option has bug?

I'm not sure if this is a bug of zencart 1.3.9f , so I report here to discuss with everyone who might has the same experience.

Once I setup the free shipping option to >100 ,so when customer purchase more than this total amount , the free shipping option show up, together with other shipping method. Because I also setup the flat shipping and free shipping. Later on I changed the amount to 200 but seems the system was still keep the previous amount 100. No matter how many times I tried even then uninstall the free shipping option model and free shipping model. It still show up ' Free shipping for orders over 100 ' if I purchase total amount more than 100.

Can anyone confirm me this? Or just a single case for me?

Answered in your other thread. It's best to ask a question in only one place, to avoid confusion and duplication of effort for the volunteers who answer questions.