SQL Server : trigger multiple if exists

Question

I have a trigger setup below which I have 2 questions on.

1. does the code look sound?

2. How do I nest another if exist inside the update. Essentially I want it to capture another column depending on if the component name is 'x' or 'y'

Specifically if the name is 'x' I want to update JobStart = jr.start and if name is 'y' I want to update JobEnd = jr.end

ALTER TRIGGER [dbo].[T_trigger_IU]
   ON  [dbo].[tableA]
   AFTER INSERT, UPDATE
AS 
BEGIN TRAN
    -- SET NOCOUNT ON added to prevent extra result sets from
    -- interfering with SELECT statements.
    SET NOCOUNT ON;

    -- Insert statements for trigger here
    IF EXISTS (select * from inserted i
                inner join jobmst jm on jm.jm_id = i.jm_id
                inner join [db2].[dbo].[table2] dm on dm.ID = i.jr_id
                where i.jr_owner = 913 and jm.jm_name LIKE '%.%' and jm.jm_name NOT LIKE '.%')
        BEGIN           
        UPDATE [db2].[dbo].[table2]
            SET RefreshTm = GETDATE(),
                StatID = i.jr_status,
                ComponentID = jrchild.jr_id,
                ComponentName = jmchild.jm_name,
                ComponentStatus = jrchild.jr_status
            FROM inserted i
            inner join jobrun jr on jr.jr_id = i.jr_id
            inner join jobrun jrchild on jrchild.jr_prntid = i.jr_id
            inner join jobmst jmchild on jmchild.jm_prntid = i.jm_id
            inner join [db2].[dbo].[table2] dm on dm.ID = i.jobrun_id
            where i.jr_id = dm.ID
        END
    ELSE
        BEGIN
        INSERT INTO [db2].[dbo].[table2]
            (CreateTm, Date, Name, DefID, Cal, CalID,
            PStart, PEnd, ID, StatID)
        SELECT
            GETDATE(), i.jr_proddt, jm.jm_name, i.jm_id, em.em_name, em.em_id,
            jd.jd_fromtm, jd.jd_untiltm, i.jr_id, i.jr_status
            FROM jobrun jr
            inner join inserted i on i.jr_id = jr.jr_id
            inner join jobmst jm on jm.jm_id = i.jm_id
            inner join evntmst em on em.em_id = jm.em_id
            inner join jobdtl jd on jd.jd_id = jm.jd_id
            where i.jr_owner = 913 and jm.jm_name LIKE '%.%' and jm.jm_name NOT LIKE '.%'
        END
COMMIT TRAN