Salesforce Response mapping - Conditional Updates. Do I need to use multiple workflows

Can anyone advise if I can set up multiple conditions in a single workflow that would fire consecutively to update salesforce even if the previous condition was not met or does the workflow end if the first or any subsequent condition is not met? If separate workflows are the way then how can I ensure they execute in a specific order?
eg I need to check all of the conditions and for each perform the salesforce updates if the conditions are met.
Update originating object - always
If address data has changed but not postcode update the address
If address and postcode changed create a new address
If contact detail has changed update relevant fields
If related info1 added create new record
if related info2 added create new record
I currently have multiple workflows that start with the survey response and then fire based on conditions to update or create objects in salesforce from the embedded date. However when moved to a full sandbox I am getting an error which seems to point towards a resource conflict on the originating object, which is a master-detail on two of the other records, when they are being created