Used "ResourceContents" as name of zip archive entry when saving compressed files

plugins/org.eclipse.app4mc.amalthea.converters.common/src/org/eclipse/app4mc/amalthea/converters/common/MigrationHelper.java

diff --git a/plugins/org.eclipse.app4mc.amalthea.converters.common/src/org/eclipse/app4mc/amalthea/converters/common/MigrationHelper.java b/plugins/org.eclipse.app4mc.amalthea.converters.common/src/org/eclipse/app4mc/amalthea/converters/common/MigrationHelper.java
index 0df925a..0f6f3e8 100644
--- a/plugins/org.eclipse.app4mc.amalthea.converters.common/src/org/eclipse/app4mc/amalthea/converters/common/MigrationHelper.java
+++ b/plugins/org.eclipse.app4mc.amalthea.converters.common/src/org/eclipse/app4mc/amalthea/converters/common/MigrationHelper.java
@@ -50,6 +50,7 @@
 	public static final String UNZIPPED_PREFIX = "unzipped_";
 	public static final String INVALID = "invalid";
 	public static final String MODEL_FILE_EXTENSION = "amxmi";
+	public static final String DEFAULT_ZIP_ENTRY_NAME = "ResourceContents";
 
 	public static final String LINE_SEPARATOR = System.getProperty("line.separator");
 
@@ -125,7 +126,7 @@
 				Path zipOutputPath = Paths.get(location.toString(), inputFile.getOriginalFile().getName());
 				try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipOutputPath));
 						InputStream fis = Files.newInputStream(outputFilePath)) {
-					ZipEntry zipEntry = new ZipEntry(inputFile.getOriginalFile().getName());
+					ZipEntry zipEntry = new ZipEntry(DEFAULT_ZIP_ENTRY_NAME);
 					zipOut.putNextEntry(zipEntry);
 					byte[] bytes = new byte[1024];
 					int length;