How can I Post the new features (that be created new) to sde?

Hi every one!

I am a new member and I still have not much experience with using Geospatial Connector for Arcgis"
Now I have a problem need your help. Please help me to solve this issue.
This is all steps that I have did:
1. I had a *.gdb file in sde
2. I registed all features to Geospatial connector administrator
3. I created some more new features ex: text_A, text_B...
4. extracted some features from sde to dgn with Projectwise explorer.
5. In the dgn file I used place tool in "command manager" and placed some elements as "text_A", "text_B"
6. I posted all elements in dgn file to sde. but in sde i don't find any text_A or text_B feature
So what wrong in all my steps?
If I want to post these elements (that be created new) to sde, what are all steps I need to do?

Many thanks,
Ngoc