My guess is that THEY figured the Liberty remake would give them a boost in sales similar to the 96-97 years:
Number of XJs built in given year:
1984 - 93,326
1985 - 120,328
1986 - 107,225
1987 - 139,295
1988 - 187,136
1989 - 207,216
1990 - 151,230
1991 - 151,578
1992 - 137,826
1993 - 144,961
1994 - 123,391
1995 - 120,234
1996 - 286,463
1997 - 258,958
1998 - 182,845
1999 - 186,116
2000 - 165,590
2001 - 120,454
Total = 2,884,172
You have to remember that the Jeep brand has always been a cash cow for the owner, lots of cash flow without much of an investment.