IBExpert 2021.7.8.1 - Firebird 2.5 database compare stored procedure domain names commented out

Question

I have IBExpert 2021.7.8.1 and Firebird 2.5

When I perform a database compare on stored procedures, my input and output parameters domain names are removed and replaced with the variable representative. On most occasions the domain is commented out.

Here's a snippet of what the update script looks like:

ALTER PROCEDURE WIP_CURRENT_MONTH_PROCEDURE(
  IP_SELECTEDYEAR /* SMALLINT_DOMAIN */ SMALLINT,
  IP_SELECTEDMONTH /* SMALLINT_DOMAIN */ SMALLINT,
  IP_MONTHSDIFFERENCE /* INTEGER_DOMAIN */ INTEGER,
  IP_MAX_MONTHS_REMOVED /* INTEGER_DOMAIN */ INTEGER,
  IP_EOM_RUN SMALLINT)
RETURNS (
  OP_CONTRACTVALUE /* MONETRY_DOMAIN */ NUMERIC(15,2),
  OP_ESTIMATED_COSTS /* MONETRY_DOMAIN */ NUMERIC(15,2),
  OP_MECHANICAL_VX_2 /* MONETRY_DOMAIN */ NUMERIC(15,2),

Here's a snippet of what the update script should look like:

ALTER PROCEDURE WIP_CURRENT_MONTH_PROCEDURE(
  IP_SELECTEDYEAR SMALLINT_DOMAIN,
  IP_SELECTEDMONTH SMALLINT_DOMAIN,
  IP_MONTHSDIFFERENCE INTEGER_DOMAIN,
  IP_MAX_MONTHS_REMOVED INTEGER_DOMAIN,
  IP_EOM_RUN SMALLINT_DOMAIN)
RETURNS (
  OP_CONTRACTVALUE MONETRY_DOMAIN,
  OP_ESTIMATED_COSTS MONETRY_DOMAIN,
  OP_MECHANICAL_VX_2 MONETRY_DOMAIN

Any ideas why this occurs for stored procedures?