Course cannot import if url_names changed in XML

Description

Please note that this is urgent as this course launches on Thursday so it's a critical time in the development process and their production is totally blocked with this issue.

The MITx 3.091x team (https://studio.edx.org/course/course-v1:MITx+3.091x_4+1T2015) is having the following issue with import:

1. Try to import
2. Repeatedly receive the following error:

There was an error while importing the new course to our database. BlockKey(type=u'chapter', id=u'Week_2_x’)

The course imports perfectly fine on my local environment. I also created a test course on edge and it imported perfectly fine. Joe Martis was previously on the course and he said that he ran into this issue before when he removed some content. He said that the solution was to delete the content of the course and start anew.

The course launches on Thursday so. I am wondering if you can get this taken of quickly.

Steps to Reproduce

1) create simple course in studio (I did this in split)
2) export the course
3) In the XML, go to course.xml, and rename the chapter_url to "chapter"
4) Rename the relevant chapter file to "chapter.xml"
5) reimport the course

Current Behavior

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Expected Behavior

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Reason for Variance

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Release Notes

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User Impact Summary

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Assignee

wkhalidR

Reporter

AlisonK

Reach

None

Impact

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Platform Area

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Customer

Partner Manager

AlisonK

URL

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Contributor Name

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Groups with Read-Only Access

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Actual Points

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Category of Work

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Platform Map Area (Levels 1 & 2)

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Platform Map Area (Levels 3 & 4)

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Priority

CAT-2
Configure