String columns are trimmed when starting with 0
Problem
When referring a string column in a formula, and the value of the string column is composed of numbers, starting with a '0', the value is interpreted as a number.
Consider following configuration
...
col.domainref = Domain Reference
col.domainref.type = string
...
col.genref = MRM Reference
col.genref.type = string
col.genref.formula = {domainref}
When the content of domainref is for instance 010, the value of the genref column will be 10.  The string value 010 is interpreted as a number 10.  The column genref will therefore contain the string 10.
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Workaround
Provide a hint to the formula parser that the dependent column value should not be interpreted as a number as follows
...
col.domainref = Domain Reference
col.domainref.type = string
...
col.genref = MRM Reference
col.genref.type = string
col.genref.formula = "" + {domainref}