Hi Renee,
it seems that you're falling into the case of the two separated rulesets:
You have to create two separated rulesets:
1. Ruleset_name: "Customer_Info_Primary_ID", Filter: "Primary_ID NOT LIKE 'M%'", Inventory: "Mask Primary_ID"
2. Ruleset_name: "Customer_Info_Spouse_ID", Filter: "Spouse_ID NOT LIKE 'M%'", Inventory: "Mask Spouse_ID"
Then create two separated masking jobs, one for each ruleset.
Avoid to execute the two jobs in parallel, you could get dead lock error at the rdbms level.
Hope this help you.
Regards.
Gianpiero