Yes, unless the synthesis or simulation software portions are too old and no longer able to be licensed through Lattice.
Please refer to the licensing page at http://www.latticesemi.com/en/Support/Licensing
Specific information about Mentor tools within ispLEVER:
The agreement between Lattice and Mentor for OEM licensing of the Mentor tools expired in May 2008. As such, any replacement licenses generated after May 2008 by Lattice for older ispLever software will not contain feature lines for the previously supported Mentor tools.
In this situation, you will need either maintenance of your current ispLever software, or another new additional purchase of ispLever or Diamond software to get the Aldec and SynplifyPro tools. That or purchase full versions of the Mentor tools from Mentor.