Fixes #2107 - Too large article body fails imports.

app/models/ticket/article.rb

@@ -304,7 +304,7 @@ returns
     current_length = body.length
     return true if body.length <= limit
 
-    raise Exceptions::UnprocessableEntity, "body of article is too large, #{current_length} chars - only #{limit} allowed" if !ApplicationHandleInfo.postmaster?
+    raise Exceptions::UnprocessableEntity, "body of article is too large, #{current_length} chars - only #{limit} allowed" if !ApplicationHandleInfo.postmaster? && !Setting.get('import_mode')
 
     logger.warn "WARNING: cut string because of database length #{self.class}.body(#{limit} but is #{current_length})"
     self.body = body[0, limit]

spec/models/ticket/article_spec.rb

@@ -256,6 +256,16 @@ RSpec.describe Ticket::Article, type: :model do
           end
         end
 
+        context 'for import' do
+          before do
+            Setting.set('import_mode', true)
+          end
+
+          it 'truncates body to 1.5 million chars' do
+            expect(article.body.length).to eq(1_500_000)
+          end
+        end
+
         context 'for "test.postmaster" thread', application_handle: 'test.postmaster' do
           it 'truncates body to 1.5 million chars' do
             expect(article.body.length).to eq(1_500_000)