SQL server data copy bug?
Instead of using "Copy-and-paste" to copy from the user-interface; use a T-SQL script to copy the rows from one table to another.

Setup a test-bed with two tables, one will be the source, the other the destination:

USE tempdb;

CREATE TABLE dbo.StatusTable1
(
    StatusNumber NUMERIC(18,10)
);

CREATE TABLE dbo.StatusTable2
(
    StatusNumber NUMERIC(28,2)
);

INSERT INTO dbo.StatusTable1 (StatusNumber)
VALUES (1370.00000000)
    , (2850.00000000)
    , (426.00000000)
    , (289.00000000)
    , (2000.00000000);


this part copies rows from StatusTable1 to StatusTable2:

INSERT INTO dbo.StatusTable2 (StatusNumber)
SELECT st.StatusNumber
FROM dbo.StatusTable1 st;


Show the content of both tables:

SELECT *
FROM dbo.StatusTable1;

SELECT *
FROM dbo.StatusTable2;


Cleanup the test-bed:

DROP TABLE dbo.StatusTable1;
DROP TABLE dbo.StatusTable2;


The results: