RMC copying elements.

When I copy and element in RMC (ex: a task or an asset, here we will call this asset1) and paste it. A new plugin is created corresponding to the pasted element after prompting a change in element name (here I change it to asset2). Two plugins show up - asset1.xmi and asset2.xmi. However when I log out and log back into RMC - the element asset2 is linked to the ASSET1.XMI file. Is there a way to resolve this issue of copying elements?