Query Is Re-organizing Data In A Concatenated String

I'm putting together a shipping database. We scan in a string of barcodes, separate out the Serial Numbers from the Barcode Data, concatenate them together as a string with asterisks as a delimiter and join them together with a date code and manufacturing line identifier. Throughout all of the data manipulations I am able to maintain the Serial Numbers in my table in the order which they were scanned in. The very last function is to concatenate the Serial Numbers and Lot information together into one long string which will then be output to a label creation software. And up to that point, the Serial Numbers are still in the correct order (based on them being linked to an autonumber field in the initial table) Upon the final concatenation, the order of the Serial Numbers is being changed, sometimes 17 out of 18 Serial Numbers will be correctly ordered with just one being randomly placed in the string out of order. Here is the code in SQL that I use for concatenating.

INSERT INTO tempMotorPalletLabel ( PalletLabel )
SELECT DISTINCT tempMotors_to_Warehouse.PalletNumber&"*"&tempMotor s_to_Warehouse.Count&"*"&tempMotors_to_Warehouse.P artNumber + '*' + Replace(Replace(ConcatRelated("SerialNumber","temp Motors_to_Warehouse","PalletNumber='"&PalletNumber &"'"),' ',''),',','*')
FROM tempMotors_to_Warehouse;

And this SQL Query transfers the concatenated string to a table that my Label Software queries for data to create the label with.

INSERT INTO AccessMotorLabelData ( PalletNumber, [Count], PartNumber, PalletLabel )
SELECT DISTINCT tempMotors_to_Warehouse.PalletNumber, tempMotors_to_Warehouse.[Count], tempMotors_to_Warehouse.PartNumber, [tempMotorPalletLabel].PalletLabel
FROM tempMotors_to_Warehouse INNER JOIN tempMotorPalletLabel ON tempMotors_to_Warehouse.PalletLabel=[tempMotorPalletLabel].PalletLabel;