PluginData isn't duplicate with node duplication

Is there any way to keep the PluginData as well when duplicate or copy/paste the nodes.

For example,

1. Create a node A.
2. Set the PluginData of node A with my plugin.
3. Copy and paste node A → node B
4. When I get the PluginData of node B, it is the same as node A has.

Any help?


PluginData also duplicates.