I have been facing many issues whenever I try to import the changes. We have three orchard instances for different environments. Changes made in one should be migrated to remaining two instances. For this, I am using import/export module in orchard CMS(v 1.6.0.0).
The export file contains only the changes I made in CMS1 => CMS1.xml and those which are already there are deleted from the file. If I update Resource text ie., "Export Untouched" to "Export Modified" and save changes to the XML file, then when I import this file to CMS2 and CMS3 instances, those imports are not working.
NOTE: I did not change the Key, I just updated the value.
Exception:
thread:[11] ERROR - NullReferenceException thrown from <>f__AnonymousType4`2 by <>f__AnonymousType4`2
[[Orchard.ContentManagement.ContentPart, Orchard.Framework, Version=1.6.0.0, Culture=neutral, PublicKeyToken=null],
[Orchard.ContentPicker.Fields.ContentPickerField, Orchard.ContentPicker, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null]]
server: XXX.YYY.com operation : /XXXCMS/Admin/ImportExport/Export exception: System.NullReferenceException: Object reference not set to an instance of an object.
at Orchard.ContentManagement.DefaultContentManager.GetItemMetadata(IContent content) in d:\Builds\29\XXX\MP_2_0_XXXCMS_Support\Sources\XXX\Main\Source\Webs\Webx\XXXX_YYYYY2.0\Orchard\ContentManagement\DefaultContentManager.cs:line 513 at Orchard.ContentPicker.Drivers.ContentPickerFieldDriver.<Exporting>b__13(ContentItem x) at System.Linq.Enumerable.
<>c__DisplayClass7_0`3.<CombineSelectors>b__0(TSource x) at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext() at System.Linq.Buffer`1.
.ctor(IEnumerable`1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source) at Orchard.ContentPicker.Drivers.ContentPickerFieldDriver.Exporting(ContentPart part, ContentPickerField field, ExportContentContext context) at Orchard.ContentManagement.Drivers.ContentFieldDriver`1.<>c__DisplayClass1c.<Orchard.ContentManagement.Drivers.IContentFieldDriver.Exporting>b__1b(ContentPart part, TField field)
in d:\Builds\29\XXX\MP_2_0_XXXCMS_Support\Sources\XXX\Main\Source\Webs\Webx\XXX2.0\Orchard\ContentManagement\Drivers\ContentFieldDriver.cs:line 67 at
Orchard.ContentManagement.Drivers.ContentFieldDriver`1.<>c__DisplayClass25.<Process>b__23(<>f__AnonymousType4`2 pf) in
d:\Builds\29\XXX\MP_2_0_XXXCMS_Support\Sources\XXX\Main\Source\Webs\Webx\XXXX_YYYY2.0\Orchard\ContentManagement\Drivers\ContentFieldDriver.cs:line 80 at
Orchard.InvokeExtensions.Invoke[TEvents](IEnumerable`1 events, Action`1 dispatch, ILogger logger) in d:\Builds\29\XXX\MP_2_0_XXXX_Support\Sources\XXX\Main\Source\Webs\Webx\Project 2.0\Orchard\InvokeExtensions.cs:line 17
