Is using Zeus's gateway feature to display contents from the different URL OK to do?

[HypermediaSystems]

I've been writing a blog on free hosting blog platform and planning to migrate that under my domain name as directory.

myblog.ABCD.com  to www.mydomain.com/myblog

now, I've learned that my Zeus server has a way to show myblog.ABCD.com at mydomain.com/myblog without transferring anything by using the Gateway feature.

This will save a lot of time and hassle for me, but my question is if this is ok to do?
Is there a chance that this could be considered a blackhat even though the content is mine?

From the Zeus documentation: 
"Gateway aliases enable users to request files from the new
web server, and receive them as if they were on the new server, when they are
still located on the legacy server. To the user, the files appear to be located on
the new server. "

Thank you.

[IM_Learner]

It says, "Gateway aliases..." So you will still be on myblog.ABCD.com and therefore the situation remains same.

The best option is to purchase the domain and hosting service and continue with the blog.

Regards

[HypermediaSystems]

Yes, the original content remains the same place. and that's why I am a bit skeptical of this method.

It will remain at myblog.ABCD.com and at the same time, that contents can be seen at mydomain.com/myblog.

I was thinking to put 301 redirect on original URL to new URL if possible, to avoid the duplicated content exist on multiple URLs.

From Google's point of view, the blog looks like it exists on mydomain.com/myblog by using the gateway URL-rewriting.

It saves a lot of hassle but I am not convinced that this is the safe way of doing it.

Thank you.