At least in the context of NBM projects, users have requested a tool to take an existing source tree containing Ant-based projects and convert it into a Maven aggregator. Would need to examine nbproject/project.properties and similar metadata and try to produce pom.xml equivalents, while compiling a to-do list of untranslatable things such as custom build.xml targets. Needs to have an SPI for different Ant-based project types, and for different aspects of a single project type such as JAXB bindings.
Experimenting with this in maven_translator_204465 branch in core-main.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue.
Thanks for your cooperation,
NetBeans IDE 8.2 Release Boss