Now let's exclude the "deleted" transaction and summarize the amount of merits received by
Storx:
20 + 1 + 1 + 1 + 1 + 5 + 1 + 1 + 1
+ 15 + 6 + 3 + 3 + 4 + 11 + 3 = 83 merits
Let's look at his forum profile:
https://bitcointalk.org/index.php?action=profile;u=516296Name: Storx
Posts: 657
Activity: 322
Merit: 233
Position: Full Member
In fact, he received not 83 merits but 133 merits.
~
theymos said the truth. He deleted those 2 merit sends.

I don't get it

Did you check the other 2 involved users too? My
merit.all.txt is based on theymos' data dump. Each week, I overwrite the past 113 days with the most recent 120 days. I didn't remove those 3 transactions that theymos did manually. That means they were removed from theymos' data dump at the time.
If you want to search deeper, I have saved these data dumps after downloading. Let me know which one you want:
merit.download.2018-05-29_Tue_14.24h.txt merit.download.2018-07-06_Fri_09.38h.txt merit.download.2018-09-28_Fri_07.28h.txt
merit.download.2018-05-31_Thu_13.59h.txt merit.download.2018-07-13_Fri_07.11h.txt merit.download.2018-10-05_Fri_07.37h.txt
merit.download.2018-06-04_Mon_23.27h.txt merit.download.2018-07-20_Fri_07.16h.txt merit.download.2018-10-12_Fri_07.36h.txt
merit.download.2018-06-05_Tue_14.38h.txt merit.download.2018-07-28_Sat_23.00h.txt merit.download.2018-10-16_Tue_17.04h.txt
merit.download.2018-06-06_Wed_17.33h.txt merit.download.2018-07-29_Sun_08.53h.txt merit.download.2018-10-19_Fri_08.10h.txt
merit.download.2018-06-08_Fri_20.14h.txt merit.download.2018-07-29_Sun_13.39h.txt merit.download.2018-10-26_Fri_09.34h.txt
merit.download.2018-06-09_Sat_20.36h.txt merit.download.2018-07-29_Sun_19.37h.txt merit.download.2018-11-02_Fri_10.04h.txt
merit.download.2018-06-11_Mon_13.33h.txt merit.download.2018-08-03_Fri_15.33h.txt merit.download.2018-11-09_Fri_08.01h.txt
merit.download.2018-06-12_Tue_16.50h.txt merit.download.2018-08-10_Fri_08.55h.txt merit.download.2018-11-16_Fri_07.57h.txt
merit.download.2018-06-13_Wed_22.25h.txt merit.download.2018-08-17_Fri_08.02h.txt merit.download.2018-11-23_Fri_08.09h.txt
merit.download.2018-06-15_Fri_20.52h.txt merit.download.2018-08-18_Sat_09.48h.txt merit.download.2018-11-30_Fri_07.45h.txt
merit.download.2018-06-17_Sun_23.11h.txt merit.download.2018-08-24_Fri_08.48h.txt merit.download.2018-12-07_Fri_07.54h.txt
merit.download.2018-06-18_Mon_21.40h.txt merit.download.2018-08-31_Fri_07.45h.txt merit.download.2018-12-14_Fri_08.08h.txt
merit.download.2018-06-21_Thu_21.55h.txt merit.download.2018-09-07_Fri_08.18h.txt merit.download.2018-12-17_Mon_11.04h.txt
merit.download.2018-06-22_Fri_08.17h.txt merit.download.2018-09-07_Fri_18.49h.txt merit.download.2018-12-21_Fri_08.28h.txt
merit.download.2018-06-28_Thu_12.11h.txt merit.download.2018-09-14_Fri_08.40h.txt merit.download.2018-12-28_Fri_09.40h.txt
merit.download.2018-06-29_Fri_21.07h.txt merit.download.2018-09-21_Fri_08.12h.txt
Only one contains the deleted Merit transaction:
merit.download.2018-07-20_Fri_07.16h.txt:1531821834 50 2674194.msg36115570 554 516296
Could it be theymos removed the transaction, but not the Merit and sMerit added to Storx' account?