Correcting reference numbers after changing order of sentences

I have written several sentences that each end with a reference number. If I change the order of the sentences, the reference numbers remain as they were. Thus, as they are encountered in the text they are not numbered 1, 2, 3, etc., but keep their old numbers (e.g. they are numbered 5, 2, 4, 1, 3 as they are encountered). How do I correct the reference numbers? Thank you.

The reference numbers in the text do not automatically renumber when I move sentences around. For example:

Hello there (1). How are you. Nice to meet you. I am fine (2).

If I cut and paste the 1st sentence to change the sequence, the references do not renumber in the sequence 1, 2 but remain 2, 1:

How are you. Nice to meet you. I am fine (2). Hello there (1).

The references do renumber in sequence if I insert new references in various sentences:

Hello there (1). How are you (2). Nice to meet you. I am fine (3).  

I cannot find “reformat bibliography”, but I do find “format bibliography”. If I select that and then click OK in the bottom right of the window that opens, the references then become correctly numbered in sequence in the text. Instant formatting is turned on in the third tab of “format bibliography”, so I assume I have CWYW enabled.

Thank you for your help. I am new to this program. 

I didn’t realize this was a delay in formatting. In other words, if I give it some time, it will eventually make the correction on its own?

I guess that is the solution:

If reference numbers are out of order because sentences or paragraphs are moved around, the problem will be corrected as new references are added. Alternatively, one can click “format bibliography” on the EndNote toolbar in Word.

Thank you for your help.