Edward,  Thank YOU!   You solved the problem.  I'll need to do more testing but on first glance it appears that by adding  COLLATION = "Space" to the property and recompiling the class, the CMQL select now works as I expect.

Edward,  Thanks for your suggestion.

Class modified as suggested.  Index rebuilt.

Select command still  fails unless I put the leading space.

TRAX:SELECT ISELLER WITH FundraiserId = "HTE_FSG_SPRING2022"

[401] No items present.
TRAX:SELECT ISELLER WITH FundraiserId = " HTE_FSG_SPRING2022"

505  Items selected to list #0
TRAX>>clearselect
TRAX:SELECT SALESREP WITH FundraiserId = "HTE_FSG_SPRING2022"

505  Items selected to list #0
TRAX>>clearselect
TRAX:

Congratulations!