I highly recommend to add resource filters for generated file and folders during importing process for eclipse projects.
It is important to work with both IDE's at the same time.

Here is a simple explanation.

Eclipse saves project settings to a xml file named ".project". If you append the foloowing code to this file during importing process:

	<filteredResources>
		<filter>
			<id>1300691000473</id>
			<name></name>
			<type>10</type>
			<matcher>
				<id>org.eclipse.ui.ide.multiFilter</id>
				<arguments>1.0-name-matches-false-false-nbbuild</arguments>
			</matcher>
		</filter>
		<filter>
			<id>1300691000484</id>
			<name></name>
			<type>10</type>
			<matcher>
				<id>org.eclipse.ui.ide.multiFilter</id>
				<arguments>1.0-name-matches-false-false-nbproject</arguments>
			</matcher>
		</filter>
		<filter>
			<id>1300691000520</id>
			<name></name>
			<type>6</type>
			<matcher>
				<id>org.eclipse.ui.ide.multiFilter</id>
				<arguments>1.0-name-matches-false-false-build.xml</arguments>
			</matcher>
		</filter>
		<filter>
			<id>1300691000532</id>
			<name></name>
			<type>10</type>
			<matcher>
				<id>org.eclipse.ui.ide.multiFilter</id>
				<arguments>1.0-name-matches-false-false-dist</arguments>
			</matcher>
		</filter>
	</filteredResources>


Eclipse doesn't show the the files generated by Netbeans to the Eclipse user. Which will be good because there is a possibilty which Eclipse user can remove or alter the files generated by Netbeans.

Regards