Package nomenclature
Virtually all the code base of gvSIG projects has been migrated to the package nomenclature of org.gvsig.xxx.
When migrating a project, imports should be updated in the same class. Eclipse provides tools to easily make the necessary changes.
A quick way of doing this, for example, is in the package manager to select all classes in the project, right-click on them and then select Source > Organize Imports.
On the other hand, if the project being migrated belongs to the gvSIG project itself, the packages should be renamed to also begin with org.gvsig.