Don't only write diffs when MIO writer was last used

1 files changed, 4 insertions, 1 deletions

diff --git a/enigma/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java b/enigma/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java
index 530aff4..88f722c 100644
--- a/enigma/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java
+++ b/enigma/src/main/java/cuchaz/enigma/translation/mapping/serde/MappingFormat.java
@@ -49,6 +49,7 @@ public enum MappingFormat {
         private final MappingsReader reader;
         private final net.fabricmc.mappingio.format.MappingFormat mappingIoCounterpart;
         private final boolean hasMappingIoWriter;
+        private boolean lastUsedMappingIoWriter;
 
         MappingFormat(MappingsWriter writer, MappingsReader reader, net.fabricmc.mappingio.format.MappingFormat mappingIoCounterpart, boolean hasMappingIoWriter) {
                 this.writer = writer;
@@ -67,7 +68,8 @@ public enum MappingFormat {
                                 throw new IllegalStateException(name() + " does not support writing");
                         }
 
-                        writer.write(mappings, delta, path, progressListener, saveParameters);
+                        writer.write(mappings, lastUsedMappingIoWriter ? MappingDelta.added(mappings) : delta, path, progressListener, saveParameters);
+                        lastUsedMappingIoWriter = false;
                         return;
                 }
 
@@ -78,6 +80,7 @@ public enum MappingFormat {
 
                         tree.accept(MappingWriter.create(path, mappingIoCounterpart), VisitOrder.createByName());
                         progressListener.step(1, I18n.translate("progress.done"));
+                        lastUsedMappingIoWriter = true;
                 } catch (IOException e) {
                         throw new UncheckedIOException(e);
                 }