Modify Solid element TET10 in Simlab

Dear friends,

I have a question about modify solid element tet10 by hand in Simlab

After finshed solid mesh (TET10), I check mesh quality. Then try to modify some element have failed. I tried to used auto cleanup but not success. 

My question: How can I modify manual solid element tet10 NO NEED remove/delete solid mesh.  I tried find function about this but do not see.

Thank you in advance