Problem with Relookup in Filemaker (IF YOU DONT KNOW FILEMAKER DONT WASTE YOUR TIME)

Hi Guys, Here is my problem, I have 2 table that I'm trying to match (when the company Name is the same give me the url) but when i use relookup field content( with the company name) he just found 80k records instead of over 400k records I export them to excel and back to Filemaker to Trim them and it found only 80K records instead of 173 records that i had in the beginning. and i know its impossible to have only 80K records so. I search and found out there is more that the relookup didn't fix. let me know if you could fix that issue if yes your bid are welcome. also please note that i would not be sending the full file at any moment the only thing i could do its a clone with some files inside or work together via skype or we schedule a time for Team viewer