The treatment number or "fertilizations number", is not the same as the Treatment ID.
All records have a unique ID number, but the treatment number can be the same for a treatment where the oocytes is fertilized and treatments where thawed embryos from the fertilization treatment is transferred.
The different looks of the module variant TREATM_TreatmentNumber.A is:
Fresh IVF (before OPU)
TREATM_TreatmentNumber.A
To create a new thaw number, use the add button (with a plus sign)

A thaw or FER treatment display both treatment number and thaw number

IUI

Ovulation stim

TREATM_TreatmentNumber.A
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A Utseende före 4.6
The module variant TREATM_TreatmentNumber.B has a more details of the sequence number of IVF and thaw treatments.
TREATM_TreatmentNumber.B
A explanation of the numbers is displayed in a tiptext if you hover the mouse pointer over the numbers

You can also click on the numbers to get the detailed explanation in a dialog window

FER or thaw treatment

IUI

Ovulation stim
