Document tumbnails are not upgrade properly in 6.1

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.30 EE GA3, 6.2.10 EE GA1, 7.0.0 Alpha 5, 7.0.0 Beta 1
• Fix Version/s: 6.2.X EE, 7.0.0 Beta 1
• Component/s: DM > Upgrade, Documents & Media
• Labels:
  • QA-CT
  • liferay-fixpack-portal-85-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 1.25
• Fix Priority: 2
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/33725

Steps to reproduce it:

1. Set the following properties:
   ig.image.thumbnail.max.dimension=150
   ig.image.custom1.max.dimension=200
   ig.image.custom2.max.dimension=300
2. Startup Liferay 6.0.12 portal
3. Create an Image using a file which dimesions are higher than 300x300 px
4. Go to your filesystem, data/images
   You will see four diferent images (the original one plus 3 thumbnails)
5. Upgrade to Liferay 6.2 (in this process IG images are moved to DL)
6. Once it is finished, check data/document_library/X/thumbnail_xx folder

Results:
Just one folder, XXX-2 (which means that just the thumbnail custom2 has been moved, and also the dimesions are the assigned to the default thumbnail ig.image.thumbnail.max.dimension)

Expected result:
Three folders and one image per folder with the proper dimensions (for the three thumbnails)