1) you have no (capture) pattern so it ='s all
2) you have a destination the same as source without modification by #1. The source of the duplicate values. The default (no destination specified) is SAME field
IMHO your work order is flawed
0) Have a complete plan that avoids traps in the end. Like resulting
Duplicate Titles after cleanup. Each case is Unique (see red item below)
1*) Map fragments to destination fields (1 pass per destination field, minimum). S&R does not have a true 'Move'. You add / insert, then clean up
Normalize data. #, No., Issue: could be dropped (must as an Index for series) or made consistent
2) Cleanup. Remove data that now has a proper home
Fine Woodworking 202: Fine Woodworking Magazine № 202
(Winter 2009) Tools & Shops
Fine Woodworking 025: Fine Woodworking Magazine № 025 (Dec 1980)
Fine Woodworking 178: Fine Woodworking Magazine № 178
Lime is Series and Index I have always seemed to have to do this as 2 passes: Series (name), then series_index
This will also become the Primary Title, since it always exists (Duplicate tie breaker)
Magazine(-period) is just a TAG

eg Magazine-Quarterly, It need not be in the Title or Series
If you have a custom Sub-Title field, you could map the subject there
You
could just
leave (season) Subject in the title
BTW Issue number is a great Series_Index if you always have it.

Analog SF&F is a monthly (I use digits for month) EXCEPT the issue a Double Month issue

every year that breaks the simple digit plan
So, Now

Show (and Tell

) us your mapping plan. With source examples. Remember Pattern matching is a precise task. Every variation counts as a needed solution

Normalize your existing {title} eg the #, No. .... problem. This will reduce the needed solutions for the 'Move -Copy' phase