Well that's embarrassing. I didn't even notice a second disc in there. Right, now that I've got my act together, I see 4 possible choices...
Name: Toy Story 3 (Disc 1)
Source file name: 00800.mpls
Duration: 1:42:33
Chapters count: 34
Size: 27.4 GB
Segment count: 46
Segment map: 494,495,497,498,500,501,503,504,506,507,509,510,512,513,517,518,516,520,522,523,525,515,526,527,530,531,533,534,536,537,539,540,542,543,545,546,548,549,551,552,555,554,557,558,560,562
File name: Toy_Story_3_(Disc_1)_t09.mkv
Name: Toy Story 3 (Disc 1)
Source file name: 00801.mpls
Duration: 1:43:03
Chapters count: 34
Size: 27.4 GB
Segment count: 47
Segment map: 494,496,497,499,500,502,503,505,506,508,509,511,512,514,517,519,516,521,522,524,525,528,526,529,530,532,533,535,536,538,539,541,542,544,545,547,548,550,551,553,555,556,557,559,560,563,562
File name: Toy_Story_3_(Disc_1)_t10.mkv
Name: Toy Story 3 (Disc 1)
Source file name: 00802.mpls
Duration: 1:43:03
Chapters count: 34
Size: 27.5 GB
Segment count: 47
Segment map: 494,495,497,498,500,501,503,504,506,507,509,510,512,513,517,518,516,520,522,523,525,515,526,527,530,531,533,534,536,537,539,540,542,543,545,546,548,549,551,552,555,554,557,558,560,564,562
File name: Toy_Story_3_(Disc_1)_t11.mkv
Name: Toy Story 3 (Disc 1)
Source file name: 00803.mpls
Duration: 1:43:03
Chapters count: 34
Size: 27.4 GB
Segment count: 47
Segment map: 494,496,497,499,500,502,503,505,506,508,509,511,512,514,517,519,516,521,522,524,525,528,526,529,530,532,533,535,536,538,539,541,542,544,545,547,548,550,551,553,555,556,557,559,560,565,562
File name: Toy_Story_3_(Disc_1)_t12.mkv
MakeMKV isn't detecting the default/primary track. You guys know which one is the correct one? Thanks again